**Bug Description** this is back to opus 4.8 1m and it is much better. no obfuscation, disguised instruction ignoring. clear conversation fo **Environment Info** - Platform: darwin - Terminal: vscode - Version: 2.1.202 - Feedback ID: 0794616f-4711-4b75-9159-be009dc800b9 **Errors** ```json [] ```

[Bug] Claude Code reverted to older model version with degraded performance

Status Closed — not planned

Reported on v2.1.202

Maintainer reply None cached

Activity 1 comment · opened Jul 7, 2026 · closed Sep 1, 2026

Bug Description
this is back to opus 4.8 1m and it is much better. no obfuscation, disguised instruction ignoring. clear conversation fo

Environment Info

Errors

[]