claude-code - 💡(How to fix) Fix Chat from 'fork' conversation went to master and modified one file in two threads [1 participants]

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anthropics/claude-code#52356Fetched 2026-04-24 06:09:20
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Code Example

vsliv368cf:30146710
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
63221493:31336333
envsactivate1:31464700
cloudbuttont:31379625
3efgi100_wstrepl:31403338
use-responses-api:31390855
ddidtcf:31399634
je187915:31401257
ec5jj548:31422691
cp_cls_c_966_ss:31454199
c3h7c220:31478652
ge8j1254_inline_auto_hint_haiku:31490510
38bie571_auto:31478677
cp_cls_t_1081:31454832
conptydll_true:31489736
ia-use-proxy-models-svc:31452481
core-renderer-profiling-on:31440367
e9c30283:31461165
test_treatment2:31471001
control_6dc23131:31495068
idci7584:31464702
e3e4d672:31494082
ei9d7968:31496641
534a6447:31496642
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
67jbj424:31495046
cpptoolson-v2:31475363
i2gc6536:31494041
1g3cj959:31494757
inline_hover_fd9bg283:31492073
23c7c724:31491644
client_tst_t:31495907
po_split_t:31488386
ddid_c:31478207
getcmakediagnosticson:31489824
ja75b849:31495667
nes-perm-reb-0:31490411
cp_cls_c_1082:31491634
ihfe3146:31493005
719di409_sum_t:31495624
0he74425_c:31489329
logging_disabled_new:31493366
output_2x:31496635
RAW_BUFFERClick to expand / collapse

Type: <b>Bug</b>

Main conversation was processing. I did a fork from previous answer and added some comment - copilot started to work on it in a fork. Then when I switched to main and I saw that it responded to comment from the fork and then it started to modify the same files in two threads!

Extension version: 2.1.117 VS Code version: Code 1.116.0 (Universal) (560a9dba96f961efea7b1612916f89e5d5d4d679, 2026-04-15T00:28:13Z) OS version: Darwin arm64 25.2.0 Modes:

<details> <summary>System Info</summary>
ItemValue
CPUsApple M4 Pro (12 x 2400)
GPU Status2d_canvas: enabled<br>GPU0: VENDOR= 0x106b [Google Inc. (Apple)], DEVICE=0x0000 [ANGLE (Apple, ANGLE Metal Renderer: Apple M4 Pro, Version 26.2 (Build 25C56))], DRIVER_VENDOR=Apple, DRIVER_VERSION=26.2 ACTIVE<br>Machine model name: Mac<br>Machine model version: 16.8<br>direct_rendering_display_compositor: disabled_off_ok<br>gpu_compositing: enabled<br>multiple_raster_threads: enabled_on<br>opengl: enabled_on<br>rasterization: enabled<br>raw_draw: disabled_off_ok<br>skia_graphite: enabled_on<br>trees_in_viz: disabled_off<br>video_decode: enabled<br>video_encode: enabled<br>webgl: enabled<br>webgl2: enabled<br>webgpu: enabled<br>webnn: disabled_off
Load (avg)2, 3, 3
Memory (System)24.00GB (0.07GB free)
Process Argv--crash-reporter-id c055cd1a-e76a-4eda-b52e-d43201b43264
Screen Readerno
VM0%
</details><details> <summary>A/B Experiments</summary>
vsliv368cf:30146710
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
63221493:31336333
envsactivate1:31464700
cloudbuttont:31379625
3efgi100_wstrepl:31403338
use-responses-api:31390855
ddidtcf:31399634
je187915:31401257
ec5jj548:31422691
cp_cls_c_966_ss:31454199
c3h7c220:31478652
ge8j1254_inline_auto_hint_haiku:31490510
38bie571_auto:31478677
cp_cls_t_1081:31454832
conptydll_true:31489736
ia-use-proxy-models-svc:31452481
core-renderer-profiling-on:31440367
e9c30283:31461165
test_treatment2:31471001
control_6dc23131:31495068
idci7584:31464702
e3e4d672:31494082
ei9d7968:31496641
534a6447:31496642
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
67jbj424:31495046
cpptoolson-v2:31475363
i2gc6536:31494041
1g3cj959:31494757
inline_hover_fd9bg283:31492073
23c7c724:31491644
client_tst_t:31495907
po_split_t:31488386
ddid_c:31478207
getcmakediagnosticson:31489824
ja75b849:31495667
nes-perm-reb-0:31490411
cp_cls_c_1082:31491634
ihfe3146:31493005
719di409_sum_t:31495624
0he74425_c:31489329
logging_disabled_new:31493366
output_2x:31496635
</details>

Main conversation:

<!-- generated by issue reporter --> <img width="1100" height="942" alt="Image" src="https://github.com/user-attachments/assets/4020488a-2707-45c4-a928-b39609cc70db" /> Fork with comment about the formatting: <img width="1073" height="425" alt="Image" src="https://github.com/user-attachments/assets/b37bb53e-da2f-4476-b603-cb3fa0e85c3a" />

extent analysis

TL;DR

The issue can be resolved by ensuring that the copilot extension is properly configured to handle multiple threads and conversations.

Guidance

  • Verify that the copilot extension is updated to the latest version (2.1.117) and compatible with the current VS Code version (1.116.0).
  • Check the system resources and load to ensure that the machine is not overwhelmed, as the issue occurred with multiple threads and conversations open.
  • Review the A/B experiments configuration to ensure that no conflicting experiments are enabled that could cause the copilot extension to malfunction.
  • Try disabling and re-enabling the copilot extension to reset its state and see if the issue persists.

Example

No code snippet is provided as the issue seems to be related to the copilot extension's behavior rather than a specific code error.

Notes

The issue may be specific to the user's environment and configuration, and further troubleshooting may be required to identify the root cause.

Recommendation

Apply workaround: Try disabling and re-enabling the copilot extension to reset its state, as this may resolve the issue temporarily until a more permanent fix is available.

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claude-code - 💡(How to fix) Fix Chat from 'fork' conversation went to master and modified one file in two threads [1 participants]