pytorch - 💡(How to fix) Fix torch.distributed._functional_collectives.reduce_scatter_tensor gets a wrong result [1 comments, 2 participants]
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pytorch/pytorch#178766•Fetched 2026-04-08 01:52:17
Comments
1
Participants
2
Timeline
28
Reactions
0
Author
nanzhaogangParticipants
wconstabTimeline (top)
mentioned ×12subscribed ×12labeled ×3commented ×1
Code Example
gpu0 and gpu1 have same input tensor, which is
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[ -64, -48, -53, -42, -47, -52, -57, -52, -60, -74, -58, -66, -38, -43, -62, -38, -51, -41, -68, -38],
[ -48, -28, -59, -58, -77, -56, -47, -47, -30, -53, -53, -42, -37, -73, -40, -38, -59, -64, -48, -57],
[ -50, -42, -41, -81, -68, -71, -56, -63, -49, -37, -51, -64, -69, -53, -74, -63, -49, -68, -62, -101]
output = torch.distributed._functional_collectives.reduce_scatter_tensor(input_tensor, "max", 0)
gpu0[122,10] is -51, which is different from input_tensor[122,10](-50).RAW_BUFFERClick to expand / collapse
🐛 Describe the bug
gpu0 and gpu1 have same input tensor, which is
[ -58, -62, -54, -36, -49, -55, -35, -36, -60, -45, -34, -56, -54, -55, -50, -78, -46, -70, -60, -74],
[ -69, -38, -49, -58, -62, -51, -48, -51, -60, -69, -78, -59, -28, -63, -54, -55, -49, -50, -63, -43],
[ -52, -31, -40, -39, -58, -45, -31, -43, -42, -60, -53, -66, -42, -48, -48, -52, -39, -42, -75, -40],
[ -63, -61, -76, -57, -53, -58, -60, -56, -73, -72, -36, -46, -66, -52, -45, -64, -70, -59, -57, -42],
[ -61, -42, -51, -49, -44, -66, -37, -52, -43, -43, -50, -53, -46, -81, -33, -55, -57, -20, -33, -49],
[ -71, -63, -61, -60, -29, -60, -58, -58, -46, -32, -25, -51, -40, -69, -46, -60, -19, -55, -46, -61],
[ -61, -52, -59, -54, -39, -44, -39, -59, -52, -62, -56, -61, -52, -32, -63, -58, -60, -66, -52, -36],
[ -68, -41, -61, -56, -67, -50, -76, -64, -74, -38, -39, -64, -61, -42, -64, -50, -44, -65, -66, -58],
[ -44, -44, -51, -55, -67, -28, -61, -60, -45, -68, -32, -24, -56, -44, -50, -38, -72, -53, -59, -51],
[ -58, -49, -52, -55, -71, -27, -57, -82, -51, -75, -54, -50, -41, -43, -48, -42, -57, -50, -59, -47],
[ -48, -50, -54, -57, -46, -46, -38, -65, -57, -47, -50, -58, -54, -44, -43, -43, -50, -46, -48, -59],
[ -43, -69, -46, -65, -55, -65, -62, -55, -57, -58, -42, -59, -49, -48, -51, -55, -56, -77, -44, -50],
[ -51, -57, -50, -59, -39, -51, -59, -76, -63, -63, -67, -56, -52, -72, -36, -80, -45, -39, -55, -49],
[ -53, -48, -52, -61, -71, -44, -56, -48, -49, -74, -63, -74, -84, -54, -53, -50, -29, -18, -42, -49],
[ -56, -46, -63, -51, -56, -69, -67, -57, -38, -62, -36, -53, -61, -51, -52, -58, -69, -62, -51, -60],
[ -42, -60, -59, -63, -68, -32, -59, -59, -72, -37, -55, -61, -61, -66, -47, -58, -59, -46, -45, -36],
[ -63, -60, -58, -32, -47, -64, -45, -66, -51, -48, -61, -52, -56, -55, -46, -56, -45, -44, -60, -65],
[ -64, -58, -50, -55, -57, -67, -44, -34, -34, -59, -55, -58, -62, -42, -38, -51, -62, -78, -61, -56],
[ -50, -44, -67, -46, -53, -52, -53, -61, -58, -45, -37, -51, -26, -75, -56, -63, -59, -49, -37, -62],
[ -55, -50, -38, -65, -48, -60, -20, -67, -58, -72, -63, -49, -50, -64, -52, -45, -61, -19, -65, -53],
[ -29, -28, -62, -28, -59, -40, -44, -59, -57, -79, -79, -24, -46, -64, -35, -71, -56, -67, -48, -52],
[ -42, -72, -57, -49, -48, -46, -47, -40, -60, -27, -56, -45, -58, -34, -62, -59, -88, -37, -51, -72],
[ -57, -59, -53, -51, -62, -48, -47, -62, -52, -46, -23, -55, -56, -51, -49, -71, -49, -40, -66, -50],
[ -56, -48, -50, -52, -54, -51, -44, -49, -60, -61, -63, -67, -48, -56, -63, -44, -64, -45, -25, -67],
[ -19, -46, -44, -59, -70, -53, -63, -50, -26, -72, -59, -61, -59, -38, -43, -56, -55, -33, -44, -86],
[ -57, -56, -59, -41, -70, -60, -38, -25, -65, -53, -30, -52, -69, -47, -71, -57, -62, -57, -59, -42],
[ -42, -35, -39, -64, -55, -61, -65, -54, -56, -44, -49, -62, -50, -39, -52, -70, -49, -60, -38, -68],
[ -66, -51, -53, -55, -34, -56, -63, -46, -50, -48, -82, -62, -69, -48, -70, -69, -35, -52, -67, -57],
[ -61, -60, -56, -52, -59, -59, -78, -56, -55, -59, -52, -56, -50, -64, -54, -44, -43, -43, -46, -50],
[ -54, -62, -53, -39, -62, -61, -69, -24, -54, -56, -64, -46, -62, -66, -43, -60, -54, -71, -52, -64],
[ -38, -67, -54, -60, -59, -57, -51, -53, -45, -68, -46, -54, -54, -51, -61, -56, -46, -60, -52, -31],
[ -54, -49, -68, -45, -51, -41, -34, -47, -58, -35, -53, -54, -62, -53, -66, -37, -61, -73, -56, -42],
[ -64, -67, -74, -44, -50, -55, -40, -32, -50, -65, -39, -53, -63, -50, -47, -55, -54, -51, -40, -56],
[ -29, -32, -58, -80, -46, -39, -48, -55, -64, -50, -71, -63, -68, -49, -68, -71, -50, -59, -52, -55],
[ -61, -49, -67, -49, -49, -66, -49, -51, -58, -63, -38, -64, -53, -56, -64, -64, -45, -43, -50, -59],
[ -79, -58, -38, -57, -45, -43, -50, -47, -64, -70, -45, -68, -75, -60, -61, -47, -57, -43, -51, -62],
[ -70, -54, -35, -70, -72, -56, -69, -64, -53, -65, -42, -61, -69, -39, -41, -55, -51, -70, -49, -50],
[ -59, -66, -76, -52, -50, -61, -58, -59, -56, -37, -67, -47, -72, -54, -44, -47, -69, -41, -56, -34],
[ -42, -62, -43, -48, -54, -50, -49, -64, -39, -49, -68, -51, -47, -56, -45, -52, -62, -28, -67, -42],
[ -91, -56, -51, -34, -62, -62, -59, -50, -51, -62, -58, -49, -65, -49, -59, -61, -39, -46, -55, -49],
[ -49, -54, -56, -75, -47, -24, -62, -35, -50, -66, -49, -45, -46, -47, -43, -47, -37, -48, -58, -64],
[ -50, -60, -49, -50, -54, -63, -57, -60, -45, -60, -54, -50, -83, -52, -63, -53, -57, -77, -51, -60],
[ -57, -40, -29, -39, -42, -55, -38, -58, -63, -64, -62, -39, -57, -29, -50, -32, -49, -64, -70, -49],
[ -33, -54, -70, -76, -54, -59, -50, -62, -41, -48, -59, -61, -51, -52, -66, -43, -36, -77, -42, -51],
[ -57, -57, -49, -57, -51, -66, -50, -59, -70, -60, -52, -41, -44, -42, -65, -59, -59, -53, -69, -58],
[ -42, -54, -59, -75, -31, -54, -65, -72, -70, -53, -37, -77, -59, -63, -43, -56, -69, -63, -47, -61],
[ -45, -59, -47, -57, -47, -42, -45, -46, -60, -61, -53, -47, -46, -63, -59, -45, -36, -45, -66, -64],
[ -43, -71, -50, -27, -71, -53, -41, -45, -64, -67, -61, -62, -54, -47, -46, -52, -41, -42, -59, -44],
[ -60, -68, -57, -39, -61, -42, -38, -43, -31, -45, -57, -67, -37, -41, -59, -67, -46, -72, -46, -59],
[ -40, -74, -48, -78, -45, -60, -49, -71, -46, -51, -56, -34, -40, -42, -72, -49, -49, -51, -53, -82],
[ -52, -39, -48, -62, -44, -54, -61, -45, -52, -37, -40, -67, -72, -44, -66, -63, -61, -52, -57, -49],
[ -60, -56, -54, -46, -75, -62, -46, -75, -59, -55, -41, -47, -57, -52, -44, -65, -73, -48, -57, -47],
[ -40, -54, -39, -47, -26, -43, -43, -75, -32, -69, -33, -48, -65, -68, -50, -68, -43, -60, -67, -65],
[ -60, -51, -51, -44, -44, -51, -69, -58, -59, -61, -49, -54, -69, -39, -61, -57, -45, -65, -49, -61],
[ -57, -50, -58, -60, -42, -46, -34, -40, -73, -63, -52, -83, -56, -45, -52, -46, -64, -61, -65, -53],
[ -77, -50, -49, -33, -69, -56, -49, -64, -29, -42, -43, -54, -55, -63, -62, -40, -76, -69, -50, -64],
[ -47, -54, -59, -54, -51, -45, -33, -54, -53, -44, -58, -51, -35, -52, -58, -51, -67, -60, -46, -63],
[ -56, -32, -41, -47, -61, -36, -49, -55, -36, -67, -63, -56, -32, -45, -43, -39, -70, -55, -37, -48],
[ -47, -68, -45, -61, -52, -46, -64, -57, -64, -56, -38, -70, -47, -65, -39, -54, -56, -60, -23, -47],
[ -44, -44, -75, -41, -49, -54, -55, -41, -81, -57, -60, -47, -54, -46, -68, -60, -50, -45, -50, -47],
[ -60, -61, -74, -39, -42, -63, -51, -59, -74, -62, -56, -61, -68, -60, -62, -51, -50, -55, -54, -76],
[ -59, -67, -40, -62, -55, -47, -40, -53, -62, -51, -30, -52, -50, -51, -62, -49, -37, -71, -41, -48],
[ -56, -45, -68, -64, -60, -55, -68, -87, -49, -63, -47, -54, -37, -64, -59, -44, -51, -46, -32, -48],
[ -54, -42, -58, -38, -48, -24, -40, -50, -70, -33, -56, -90, -64, -73, -65, -59, -41, -22, -56, -61],
[ -60, -67, -28, -59, -46, -48, -62, -63, -81, -41, -91, -53, -49, -49, -60, -46, -71, -45, -45, -66],
[ -59, -45, -61, -67, -32, -39, -51, -33, -74, -60, -71, -62, -39, -36, -37, -64, -45, -62, -84, -51],
[ -65, -54, -60, -63, -45, -56, -55, -61, -62, -62, -54, -70, -71, -33, -29, -43, -70, -54, -70, -54],
[ -59, -71, -68, -54, -57, -62, -81, -36, -45, -48, -57, -43, -32, -45, -42, -65, -52, -71, -51, -59],
[ -26, -56, -70, -53, -43, -36, -66, -48, -36, -62, -38, -43, -64, -59, -38, -43, -54, -52, -42, -48],
[ -56, -59, -55, -52, -49, -51, -44, -80, -78, -50, -42, -85, -59, -66, -57, -71, -48, -47, -53, -56],
[ -47, -58, -58, -42, -67, -51, -80, -47, -29, -63, -61, -54, -55, -47, -52, -48, -48, -51, -62, -61],
[ -62, -63, -91, -57, -58, -46, -61, -51, -65, -70, -47, -61, -60, -49, -48, -50, -56, -63, -57, -38],
[ -42, -26, -51, -41, -62, -50, -39, -44, -73, -59, -38, -73, -34, -36, -61, -54, -54, -42, -47, -52],
[ -38, -51, -60, -34, -34, -45, -71, -67, -60, -55, -40, -57, -49, -49, -67, -49, -55, -45, -81, -52],
[ -67, -63, -64, -56, -49, -50, -69, -53, -48, -59, -73, -63, -54, -28, -63, -61, -56, -66, -72, -64],
[ -54, -67, -48, -44, -55, -68, -46, -34, -51, -64, -63, -58, -54, -45, -70, -62, -62, -37, -38, -83],
[ -50, -46, -60, -80, -46, -52, -54, -55, -51, -54, -47, -59, -38, -54, -54, -66, -63, -38, -56, -43],
[ -60, -45, -69, -59, -61, -51, -45, -58, -40, -62, -49, -38, -47, -70, -50, -45, -69, -76, -46, -26],
[ -64, -60, -33, -30, -64, -54, -45, -57, -47, -45, -54, -45, -40, -62, -39, -69, -49, -63, -40, -62],
[ -39, -46, -60, -67, -20, -36, -44, -65, -49, -38, -58, -52, -57, -44, -27, -40, -50, -37, -57, -44],
[ -72, -65, -35, -58, -47, -61, -63, -62, -45, -64, -77, -38, -70, -57, -44, -34, -68, -51, -52, -36],
[ -52, -49, -53, -43, -65, -42, -50, -49, -61, -51, -66, -58, -47, -63, -56, -66, -47, -57, -45, -53],
[ -57, -70, -42, -60, -63, -58, -54, -47, -49, -48, -48, -62, -27, -55, -47, -51, -51, -53, -53, -55],
[ -69, -46, -41, -45, -49, -47, -64, -79, -52, -51, -40, -62, -59, -50, -52, -78, -54, -60, -61, -50],
[ -62, -53, -61, -70, -37, -46, -59, -45, -69, -57, -52, -45, -46, -51, -42, -71, -43, -60, -47, -68],
[ -35, -78, -50, -62, -48, -71, -59, -75, -69, -43, -55, -33, -40, -50, -40, -39, -49, -61, -61, -60],
[ -45, -75, -40, -58, -69, -38, -57, -58, -47, -44, -61, -73, -56, -61, -44, -49, -39, -46, -70, -42],
[ -60, -69, -54, -55, -40, -45, -44, -36, -65, -58, -64, -48, -45, -66, -41, -55, -65, -54, -62, -30],
[ -54, -72, -75, -56, -38, -63, -46, -50, -60, -34, -58, -47, -55, -28, -60, -58, -50, -55, -57, -43],
[ -65, -53, -59, -37, -44, -59, -76, -48, -68, -38, -79, -48, -62, -72, -35, -47, -42, -61, -62, -62],
[ -58, -47, -57, -40, -62, -38, -48, -46, -55, -69, -60, -67, -44, -45, -55, -52, -64, -32, -48, -62],
[ -59, -46, -54, -67, -55, -55, -56, -54, -66, -59, -64, -55, -53, -64, -53, -55, -55, -56, -44, -59],
[ -48, -56, -63, -43, -49, -38, -46, -47, -60, -42, -60, -58, -57, -31, -51, -59, -67, -54, -44, -63],
[ -47, -27, -50, -68, -29, -76, -58, -55, -54, -50, -51, -44, -53, -64, -62, -59, -46, -50, -68, -24],
[ -52, -91, -71, -64, -57, -66, -71, -60, -65, -54, -58, -53, -68, -63, -52, -51, -49, -34, -43, -52],
[ -42, -66, -45, -43, -39, -49, -46, -53, -63, -54, -65, -70, -49, -53, -44, -46, -44, -51, -43, -65],
[ -53, -59, -54, -52, -64, -45, -52, -57, -51, -72, -52, -62, -39, -39, -72, -54, -47, -65, -63, -58],
[ -59, -38, -34, -66, -41, -57, -80, -57, -56, -56, -48, -53, -42, -55, -47, -52, -57, -79, -39, -64],
[ -53, -59, -37, -55, -53, -40, -46, -40, -41, -56, -32, -56, -50, -67, -36, -54, -58, -72, -29, -61],
[ -51, -56, -48, -65, -73, -36, -59, -47, -71, -56, -80, -47, -52, -57, -53, -79, -41, -65, -54, -53],
[ -53, -66, -57, -51, -81, -54, -35, -52, -47, -43, -43, -50, -38, -51, -62, -32, -71, -64, -50, -53],
[ -51, -54, -52, -60, -42, -52, -48, -24, -50, -56, -72, -52, -59, -26, -79, -45, -72, -44, -52, -48],
[ -72, -67, -45, -45, -61, -32, -52, -57, -55, -59, -45, -29, -44, -53, -45, -58, -53, -41, -57, -46],
[ -43, -56, -54, -60, -41, -20, -48, -48, -47, -55, -61, -33, -64, -44, -41, -47, -73, -63, -44, -46],
[ -75, -57, -58, -52, -45, -50, -65, -63, -67, -48, -32, -62, -58, -54, -49, -30, -50, -54, -48, -52],
[ -42, -67, -60, -45, -46, -36, -42, -46, -59, -56, -60, -50, -44, -73, -41, -44, -45, -37, -39, -39],
[ -50, -57, -43, -50, -75, -23, -62, -52, -53, -57, -66, -29, -61, -59, -49, -58, -58, -93, -62, -59],
[ -53, -53, -51, -56, -51, -38, -66, -46, -78, -43, -52, -67, -70, -50, -40, -65, -53, -49, -50, -42],
[ -56, -52, -44, -77, -58, -40, -38, -52, -51, -44, -75, -45, -44, -58, -62, -59, -61, -66, -56, -51],
[ -63, -55, -55, -46, -54, -48, -47, -25, -69, -68, -81, -55, -39, -52, -79, -54, -90, -33, -51, -44],
[ -54, -66, -50, -60, -51, -49, -64, -46, -61, -47, -40, -61, -43, -39, -64, -77, -39, -54, -51, -68],
[ -52, -52, -58, -67, -77, -73, -72, -48, -61, -88, -47, -42, -35, -41, -54, -66, -46, -20, -46, -44],
[ -54, -34, -57, -65, -60, -47, -75, -55, -76, -46, -44, -35, -53, -63, -57, -29, -50, -46, -41, -60],
[ -51, -57, -55, -55, -54, -56, -37, -61, -40, -40, -62, -49, -40, -56, -40, -57, -51, -53, -58, -60],
[ -35, -34, -58, -38, -44, -51, -51, -61, -46, -51, -44, -57, -64, -65, -41, -67, -72, -39, -62, -43],
[ -54, -46, -59, -42, -62, -59, -53, -39, -46, -75, -55, -52, -35, -53, -63, -39, -54, -41, -73, -59],
[ -47, -50, -35, -62, -55, -56, -36, -66, -56, -52, -41, -79, -70, -47, -67, -63, -25, -47, -43, -15],
[ -43, -44, -83, -46, -43, -26, -43, -53, -43, -64, -75, -46, -39, -43, -50, -53, -48, -70, -54, -46],
[ -53, -61, -46, -51, -62, -55, -62, -54, -41, -55, -66, -35, -71, -53, -38, -62, -49, -79, -35, -44],
[ -35, -41, -44, -48, -45, -58, -59, -49, -53, -59, -53, -42, -64, -57, -60, -65, -62, -79, -52, -66],
[ -45, -57, -58, -73, -65, -61, -55, -56, -78, -53, -75, -63, -62, -47, -54, -48, -54, -52, -31, -61],
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[ -37, -63, -48, -72, -43, -62, -48, -70, -64, -43, -57, -63, -46, -39, -53, -68, -44, -64, -54, -31],
[ -55, -27, -43, -49, -57, -65, -59, -60, -69, -57, -43, -52, -64, -68, -37, -44, -45, -41, -59, -43],
[ -47, -56, -52, -32, -32, -45, -43, -72, -42, -48, -64, -43, -51, -79, -44, -60, -57, -70, -52, -66],
[ -64, -48, -53, -42, -47, -52, -57, -52, -60, -74, -58, -66, -38, -43, -62, -38, -51, -41, -68, -38],
[ -48, -28, -59, -58, -77, -56, -47, -47, -30, -53, -53, -42, -37, -73, -40, -38, -59, -64, -48, -57],
[ -50, -42, -41, -81, -68, -71, -56, -63, -49, -37, -51, -64, -69, -53, -74, -63, -49, -68, -62, -101]
output = torch.distributed._functional_collectives.reduce_scatter_tensor(input_tensor, "max", 0)
gpu0[122,10] is -51, which is different from input_tensor[122,10](-50).Versions
Is this a bug?
cc @awgu @wanchaol @fegin @fduwjj @wz337 @wconstab @d4l3k @pragupta @msaroufim @dcci @aditvenk @xmfan
extent analysis
Fix Plan
The issue seems to be related to the torch.distributed._functional_collectives.reduce_scatter_tensor function. To fix this, we need to ensure that the input tensor is properly synchronized across all GPUs before performing the reduction operation.
Here are the steps to fix the issue:
- Verify the input tensor: Before calling
reduce_scatter_tensor, verify that the input tensor is identical across all GPUs. You can do this by usingtorch.distributed.all_gatherto gather the input tensors from all GPUs and check if they are identical. - Use
torch.distributed.barrier(): Add atorch.distributed.barrier()call beforereduce_scatter_tensorto ensure that all GPUs have finished their previous operations and are synchronized. - Check the reduction operation: Verify that the reduction operation ("max" in this case) is correct and suitable for the input tensor.
Here's an example code snippet that demonstrates the fix:
import torch
import torch.distributed as dist
#...
# Verify the input tensor
input_tensor =... # your input tensor
gathered_tensors = [torch.zeros_like(input_tensor) for _ in range(dist.get_world_size())]
dist.all_gather(gathered_tensors, input_tensor)
for i, tensor in enumerate(gathered_tensors):
if not torch.equal(tensor, input_tensor):
print(f"Input tensor mismatch on GPU {i}")
# Add a barrier to ensure synchronization
dist.barrier()
# Perform the reduction operation
output = dist._functional_collectives.reduce_scatter_tensor(input_tensor, "max", 0)Verification
To verify that the fix worked, you can add some debug prints or use a debugger to check the values of the input tensor and the output tensor. Specifically, you can check the value of gpu0[122,10] and input_tensor[122,10] to ensure they are identical.
Extra Tips
- Make sure to use the correct reduction operation for your use case. In this example, we're using "max", but you may need to use a different operation depending on your specific requirements.
- If you're using a custom reduction operation, ensure that it is correctly implemented and tested.
- When working with distributed tensors, it's essential to ensure that all GPUs are properly synchronized to avoid inconsistencies and incorrect results.
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×6Another batch ranked right after the header list — different links, same matching logic.
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- [BUG] Oversized-image 400 error triggers a retry loop that invalidates prompt cache and inflates cost ~35×
- [BUG] AddPackage failed: HRESULT 0x80073CF6
- Usage Policy refusal cascades into OAuth session invalidation — 5 forced re-logins/day during defensive coding on own codebase
- [Bug] Model refuses to execute git add command despite enabled tool permissions
- Add setting to disable auto-attaching IDE selection/active file by default (VS Code extension)
- [BUG] Claude Desktop (Windows): MCP tool calls hard-terminated and bridge wedge after repeated timeouts
- Spawned child process (versioned binary) grew to 12.3 GB RSS and was OOM-killed
- [BUG] Workflow-tool agent worktrees are never cleaned up — neither WorktreeRemove hook nor default removal fires on teardown
- [BUG] WorktreeCreate hook stdin payload doesn't match documentation — Workflow runtime sends 'name', docs say 'worktree_name' + 'base_path' + 'source_ref'
- I don't have a bug report to analyze. Please provide the actual error message, logs, or description of the problem you're experiencing with your Claude instance, and I'll generate an appropriate GitHub issue title for it.
- [BUG] Re-opening 37919
- Cowork (macOS): VM SDK 2.1.163 fails download_and_sdk_prepare ("Download failed") though artifact is reachable; no fallback to working 2.1.161
- [BUG] effortLevel "max" in settings.json ignored at session start (downgrades to high) — v2.1.162, regression of #43322
- [BUG] Shift+click required for text selection — regression from ~2 weeks ago
- MCP tool-result widgets render as empty boxes (Claude Code Desktop)
- [BUG] Claude CoWork 1M context error on a Max plan
- Desktop app (Windows): @ file mention has no autocomplete and folder picker cannot navigate folders
- [BUG] Vercel MCP OAuth token not persisted — empty accessToken after every auth
- [BUG] attribution.commit setting in settings.json is ignored — system prompt Co-Authored-By trailer always wins
- Permission prompts for desktop automation are slower than doing the task manually
- [Feature Request] Support drag-and-drop image input with file path output
- Allow sending Element Screenshot context to claude.ai web chat
- API error Usage credits required / Prompt too long in VSCode Claude Code plugin
- Assistant text before an AskUserQuestion dialog in the same turn is not displayed
- [Feature Request] Enhanced Claude personality/interaction modes for extended sessions
- [BUG] Can't create a routine
- [BUG] /stats activity heatmap: date labels off by one day (recent); day-of-week shift in pre-~April 25 history
- JetBrains plugin: ability to label/name individual sessions
- Can't collapse tool output blocks anymore since the latest desktop update (1.11187.1)
- [BUG] Session folders/groups reset after app update
- Cowork → Customise → Connect hangs after OAuth completes —...
- [BUG] OAuth login & `claude auth logout` crash with "null is not an object (evaluating 'T.history')" on macOS
- Status line: expose monthly usage/limit data
- [Bug] Anthropic API Error: 5xx Server Errors
- Session sync between Desktop app and VS Code/Cursor extension
- [Bug] Chat fails to execute simple git command, incorrectly reported as completed
- [Bug] Claude Code process frozen unresponsive to user input
- [BUG] Claude Desktop (macOS): file-attachment chip from agent file-delivery is not clickable (click is a no-op)
- [BUG] Max 20x Weekly Limit Still Depletes in 2–2.5 Days After June 1 "Fix" — Forced to Cancel $200/mo Subscription
- [Desktop] Respect statusLine setting (run statusline.sh) in the desktop app
- [Bug] Anthropic API returns fabricated quantitative estimates presented as grounded analysis to support pre-selected conclusions
- [BUG] Cowork archive uploads (zip etc.) fail to persist to VM — docx and other regular files work fine
- Claude in Chrome: CLI never connects when Claude Desktop is installed — extension binds only to Desktop's native host
- [Feature Request] Prevent auto-adding Claude as commit coauthor
- Subagent ignores tool-call denials and keeps fetching instead of summarizing existing context
- [MODEL] Model persistently assumes female gender for gender-neutral names (e.g. Dana), ignoring corrections
- Feature Request: Share project context between Claude.ai Chat and Claude Code
- [BUG] Unexpected token usage spike and continued consumption while Claude Code is inactive
- [FEATURE] Page Up and Page Down buttons don't work in Cowork unlike in Code - Claude Desktop Windows
- [BUG] HRESULT 0x80073CFF fix: install Git for Windows instead of PowerShell 7
- [BUG] Windows: claude agents spawn visible reg.exe console windows during background session startup
- Model quality feedback: Sonnet 4.6 misinterprets task instructions and gives nonsensical responses
- [BUG] Skill name conflict persists after full local cleanup — registry appears server-side
- [MODEL] session token utilization causing me to open new sessions every 2 hours and I'm on the max plan, happening for the last week
- [BUG] "Reset Application Data" dialog understates destructiveness — permanently deletes all Cowork sessions, outputs, and local skills without warning
- [Feature Request] Add automatic context usage monitoring - Agent has zero introspection into its own context-budget — and human-facing surfaces (/context, statusline) don't close the gap
- [FEATURE] Official Claude Desktop build for Linux (Ubuntu LTS / Debian)
- [BUG] MCP stdio server notifications/tools/list_changed does not refresh the tool catalog mid-session
- [Bug] Anthropic API Error: False-positive Usage Policy block on biomedical research with Opus 4.8
- /schedule skill consistently fails to connect to remote scheduling service (Pro account)
- Quickstart "Essential commands" table mixes shell and session commands without distinction
- [Bug] Claude Code native binary launch failure: disclaimer helper not executable
- Delete session button has no confirmation and sits 1px from edit button in VS Code session list
- Claude Code VS Code : ~181k token system prompt on new chats causes immediate "Prompt is too long"
- Tool call serialized as text (court<invoke>) with stop_reason=end_turn — model emits no executable tool_use, turn silently stalls (claude-opus-4-8)
- [Bug] Fully ignored rules, instructions and output-styles (any model), bloated and confusing interface and very poor quality overall
- Render statusline before MCP/plugin initialization completes
- [Bug] NameError in orchestrator error handler crashes Bug Hunter review on agent failure
- [BUG] Commits authored by [email protected] are attributed to unrelated GitHub user
- [BUG] IDE diagnostics (mcp__ide__getDiagnostics) unavailable in the VS Code embedded-panel runtime
- Native binary approach breaks Claude Code on QNX and BSD platforms
- Proposal: Behavior-memory budget advisor (Loop Pilot) as pre-loop hook
- [BUG] Canceling ExitPlanMode leaves terminal output broken
- VS Code extension: keyboard shortcut to toggle the active-file context chip
- VS Code extension: managing multiple chats is unreliable — no conversation list indicators, no archiving
- [BUG] Claude Desktop Code: Auto-Reconnects to Last SSH Host on Startup
- [Bug] Claude generating hallucinated fixes for non-existent issues
- [FEATURE] Wire `sandbox.allowPty` from settings.json into the macOS Seatbelt profile (sandbox-runtime already supports it)
- VS Code extension: terminal-mode Claude not respawned after window reload (panel returns empty)
- False-positive Usage Policy blocks on legitimate academic sessions: safety classifier fires mid-session on accumulated biomedical vocabulary
- [Bug] AWK variable syntax ($2) stripped from skill definitions
- [FEATURE] visibility: "team" for routine-created sessions (config-level + /fire override)
- [BUG] "claude auth status" says logged in but "claude" wants to login again
- [Bug] Anthropic API Error: Tool Result Block Missing Corresponding Tool Use Block
- [Bug] Anthropic API Error: Usage Policy Violation Without Clear Cause
- [BUG] Claude Code output ALWAYS cut-off in new "scrolling window" feature
- [Feature Request] Add ability to resume/continue stalled deep-research workflow runs
- [BUG] Failed to install plugin" i Cowork på macOS
- [BUG] /deep-research — default workflow frequently hits "API Error: Server is temporarily limiting requests"
- [Feature] Model-initiated dynamic effort allocation for multi-step operations
- [FEATURE] Add prompt_id to PostToolUse and PreToolUse hook payloads
- [BUG] Claude Max 5x: 1M context window auto-triggered in Cowork session, deducting usage credits without user request
- [FEATURE] Generic bindable action to send literal text / run a command from a keypress
- [Bug] Rating prompt triggers in fork subagents and deadlocks them
- [BUG] Persistent MCP server diagnostic alert after removing configuration
- [BUG] False-positive stop_reason=refusal block legitimate research in claude code 2.1.165
- [BUG] says "Server is temporarily limiting requests"
- [MODEL] Opus 4.6 - I told it to skip other data and it still imported other data.
- [Bug Report: Unable to determine issue from empty submission]
- [Feature Request] Tab autocomplete should complete to longest common prefix, not full-accept first match
- [Bug] Feedback prompts appearing unexpectedly during tool responses
- Agent teams mode: touch scroll broken over RDP (works in regular mode, same terminal)
- Auto-compact circuit breaker prevents compaction on Haiku (v2.1.65+)
- Plugin MCP reconnect fails: ${CLAUDE_PLUGIN_ROOT} not substituted after /model or session reconnect
- [MODEL] opus 4.8
- [Bug] Anthropic API Error: Security Policy Violation on Legitimate Code Project
- [Bug] Anthropic API Error: Usage Policy violation on legitimate code audit request
- [BUG] Model calls AskUserQuestion with no preceding text block — explanation stays in thinking and never reaches the user
- Hosted Notion MCP (DCR): client re-registers per session → repeated full re-auth (orphaned refresh tokens)
- [Bug] Wakeup command injects fake "USER INPUT" leading to hallucination spirals
- [BUG] Claude Cowork blocked by "Usage credits required for 1M context" — usage credits enabled, /model workaround non-functional, triggers at 7% session usage during compaction
- Image/screenshot attachments not delivered to the model (Claude Code on claude.ai)
- [BUG] `claude.workspaceRoot` changes context but not session list scope
- Stale OAuth refresh token causes persistent 401 "Invalid authentication credentials" that `/login` does not recover from (manual deletion of ~/.claude/.credentials.json required)
- [BUG] Claude for Office (PowerPoint/Excel), Mac Broken
- [BUG] MCP client drops a trailing Optional[str] tool argument from tools/call (present in schema, lost on the wire)
- [FEATURE] Feature Request: Optional sync between Claude Chat Projects and Claude Code memory/instructions
- [Bug] Auto-update Failed Error
- Sycophantic drift under correction causes loss of precision when user is frustrated
- UI diff/file view stays pinned to original harness worktree; doesn't follow EnterWorktree branch switch
- Plugin subagents can't resolve ${CLAUDE_PLUGIN_ROOT}/${CLAUDE_PROJECT_DIR} — no way to read plugin-bundled files from a subagent
- [BUG] Conector Figma deshabilitado en Cowork — flujo OAuth no funciona
- Docs: plugin MCP tool namespacing + allowed-tools vs subagent tools: enforcement are under-documented
- [BUG] Frequent session freezes / connection drops on Claude Code (VS Code extension) under
- [Bug] Approval prompt fails to render intermittently, causing session to hang
- [BUG] VS Code Extension Not Connecting to Claude
- Stats dashboard counts multi-day sessions only on their start date (Active days / streaks / peak hour undercounted)
- [FEATURE] VSCode extension: session titles truncated in Ctrl+Tab switcher despite available screen space
- [BUG] Inline $...$ LaTeX does not render in Claude Code desktop tab (macOS/Windows) — display $$...$$ works
- cli unexpected status 401 Unauthorized
- Codex Mobile setup: Allow button is a no-op because app-server rejects `remoteControl/enable`
- Windows desktop upgrade leaves openai-bundled marketplace partial, causing Browser/Computer Use unavailable
- [Feature request] Add a “hold queued tasks” control for human-in-the-loop review
- When i paste a long json , the app will get stuck forever
- Codex Desktop: resume conversation and model settings fail when cloud config bundle times out
- [CLI] Windows: Intermittent infinite scroll animation loop when resuming long conversations after heavy usage
- Mac desktop app freezes on launch (blank screen, high CPU) — corrupted ~/.codex session; fixed by moving the folder aside
- Fullscreen triggers abnormal transparent background on Codex App
- PendingMigrationError again in latest codex plugin in vscode.
- full screen error windows11
- Pro 5x: weekly limit dropped from ~ to ~ after June 1; quota drains passively even when not using Codex
- Editing latest side chat message fails with "failed to edit message"
- Codex TUI thread rename fails over VS Code SSH with thread/name/set failed
- Codex Desktop injects UTC current date despite America/Los_Angeles timezone
- New Pro sub purchased but doesn't seem to apply
- Computer Use native pipe unavailable on Windows despite codex-computer-use pipe existing
- Background automation cannot consistently resolve or reach external hosts while interactive shell and Postman can
- Windows Codex Desktop regenerates node_repl MCP config that crashes with UAC ERROR_ELEVATION_REQUIRED when Computer Use is enabled
- Codex Desktop Windows: terminal/code font setting is hidden and missing Geist Mono causes unreadable spacing
- Codex app-server stdout EOF while process remains alive for specific provider-visible context payloads
- Add a web-based Codex plugin marketplace and let Codex submit feedback with user approval
- Codex mobile cannot reconnect after desktop-side paired phone is deleted; iOS keeps stale offline Windows host
- Windows Codex app: Computer Use shows "Computer Use plugins unavailable" despite current docs saying Windows is supported
- Add a pause work button in app
- Service Tier selector is hidden when refresh token is expired but access token is still valid
- Codex App cannot find Connections in Settings
- VS Code Codex extension burns sustained CPU while waiting for a workspace to become a Git repository
- VS Code extension: support VS Code notifications
- Add General User Mode and Claim Gates for non-programmer Codex users
- Integrated terminal scrollback is truncated after switching projects
- Codex mobile stays offline with red dot after repeated re-pairing; Reconnect does nothing
- Remote Control: target node_repl launches with controller CODEX_HOME env despite correct target config
- computer use tool is missed
- Computer Use plugin is unavailable in Codex Desktop on Windows
- Codex CLI npm self-update hangs on NFS because old running binary remains as `.nfs*`
- Codex doesn't work properly after resuming from being sent to suspend
- Codex Desktop terminal view renders with excessive character spacing and sparse layout
- Codex Desktop imagegen repeatedly fails with TooManyRequests and no clear recovery path
- Make Codex CLI pricing banner plan-aware for Plus users
- TUI: final agent message silently dropped from terminal when `terminal_resize_reflow` feature is enabled
- VS Code extension crashes when trying to paste string
- Built-in image_gen returns unrelated infographic outputs in Codex CLI session
- Context compaction on remote connection failing due to invalid value: `context_compaction`
- Queued /clear drops later queued prompts
- codex upload ~/.codex/rules/default.rules even when sandbox_mode = "danger-full-access"
- Codex Desktop five-hour usage-limit percentage sometimes increases during active window
- Codex Desktop pet overlay can leave the main composer without focus on macOS
- Windows Desktop update relaunch does not restore maximized window state
- /model persists current selection to config.toml; clarify or make session-scoped
- Feature request: official Shopee connector/plugin for Codex ecommerce workflows
- Codex sandbox appears to hang after multi-file Black runs complete.
- Codex CLI TUI remains sluggish after compaction because visible transcript replay is not compact-aware
- Disable the shit sidebar from the app completely
- Codex App settings shows Chrome extension disconnected while the extension backend is usable from another Chrome profile
- MCP OAuth workspace binding can silently diverge from CLI profiles in multi-client workflows
- Windows Computer Use unavailable: native pipe missing in Codex Desktop 26.602.30954
- Codex Desktop cron automation appears to be scheduled in both local time and UTC
- codex's gpt image doesn't accept editing mask
- 左侧栏和顶部无法显示
- Codex App on macOS repeatedly prompts to reinstall bundled computer-use plugin after every restart
- JSON Schema: `permissions` does not allow "<name>" key
- Computer Use not enabled - Windows - Egypt -Plus account
- codex imagegen bug 无法生图
- Windows Codex app missing “Control this PC” tab in Settings > Connections
- Codex usage quota decreases slowly even when I am not actively using Codex