[Bug] Model performance degradation: React code generation quality declining
Status Open
Reported on v2.1.210
Maintainer reply None cached
Activity 0 comments · opened Jul 16, 2026
Bug Description
I despise the direction this is taking, it should be better over time and it's getting worse. A model can't "unlearn" React from one week to another.
Environment Info
- Platform: darwin
- Terminal: ghostty
- Version: 2.1.210
- Feedback ID: 3e71e329-9c8d-4d96-8bc9-47c787eb5fed
Errors
[{"error":"TelemetrySafeError: VirtualMessageList: itemKeys/messages length desync (keys=432 messages=430 range=[364,432))\n at t4_ (/$bunfs/root/src/entrypoints/cli.js:13224:8188)\n at HRp (/$bunfs/root/src/entrypoints/cli.js:13224:1103)\n at es (/$bunfs/root/src/entrypoints/cli.js:1551:21238)\n at Ma (/$bunfs/root/src/entrypoints/cli.js:1551:40023)\n at yS (/$bunfs/root/src/entrypoints/cli.js:1551:50844)\n at lpe (/$bunfs/root/src/entrypoints/cli.js:1551:87944)\n at sIe (/$bunfs/root/src/entrypoints/cli.js:1551:86898)\n at HD (/$bunfs/root/src/entrypoints/cli.js:1551:86717)\n at vSe (/$bunfs/root/src/entrypoints/cli.js:1551:83037)\n at Lt (/$bunfs/root/src/entrypoints/cli.js:1551:6609)","timestamp":"2026-07-16T02:57:38.924Z"}]