claude-code - 💡(How to fix) Fix After compaction and subagent return, Main agent set's itself from Sonnet 4.6 to Opus 4.7 without user interaction [2 comments, 2 participants]

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/jason/.local/share/claude/versions/2.1.123 (expected in multi-process scenarios)\n at x86 (/$bunfs/root/src/entrypoints/cli.js:2769:2177)\n at Jw8 (/$bunfs/root/src/entrypoints/cli.js:2769:1257)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T13:32:24.430Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:120:13313)\n at emit (node:events:92:22)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:119:3321)\n at request (/$bunfs/root/src/entrypoints/cli.js:122:2467)\n at async Qo6 (/$bunfs/root/src/entrypoints/cli.js:445:4271)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T13:32:44.448Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:120:13313)\n at emit (node:events:92:22)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:119:3321)\n at request (/$bunfs/root/src/entrypoints/cli.js:122:2467)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T13:48:26.558Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:120:13313)\n at emit (node:events:92:22)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:119:3321)\n at request (/$bunfs/root/src/entrypoints/cli.js:122:2467)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T13:49:07.876Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:120:13313)\n at emit (node:events:92:22)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:119:3321)\n at request (/$bunfs/root/src/entrypoints/cli.js:122:2467)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T13:49:25.753Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:120:13313)\n at emit (node:events:92:22)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:119:3321)\n at request (/$bunfs/root/src/entrypoints/cli.js:122:2467)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T13:50:00.179Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:120:13313)\n at emit (node:events:92:22)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:119:3321)\n at request (/$bunfs/root/src/entrypoints/cli.js:122:2467)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-29T13:50:15.320Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:120:13313)\n at emit (node:events:92…

TL;DR

The agent switches back to Opus 4.7 after being set to Sonnet 4.6, causing usage to be burned within a few minutes, suggesting a potential issue with model selection or quota management.

Guidance

• The error messages indicate Axios timeouts, which could be related to network issues or server overload, but the primary concern is the agent's model switching behavior.
• Verify if the issue persists when using a different model or adjusting the effort level.
• Check the documentation for any known issues with model selection or quota management in version 2.1.123.
• Consider reaching out to support with the provided Feedback ID (3e39d3c5-5108-4e4d-b823-49f03ce7bcc4) for further assistance.

Example

No code snippet is provided as the issue seems to be related to the agent's behavior and model selection rather than a specific code error.

Notes

The content was truncated, which might limit the ability to provide a comprehensive solution. The errors listed are primarily Axios timeouts, but the root cause appears to be related to the agent's model switching.

Recommendation

Apply workaround: Try adjusting the model selection or effort level to see if the issue persists, and reach out to support for further guidance.