[Bug] Anthropic API Error: Unexpected model downgrade from Fable 5.0 to Opus 4.8 during session
Status Open
Reported on v2.1.212
Maintainer reply None cached
Activity 0 comments · opened Jul 17, 2026
Bug Description
I got dropped out from Fable to Opus 4.8 when working on reviewing our RBAC implementation. Presumably for referencing terms such as "RBAC" and server overload etc. We just try to tighten up our own implementation, so this is an incorrect judgement.
Environment Info
- Platform: darwin
- Terminal: Apple_Terminal
- Version: 2.1.212
- Feedback ID: 26a2888f-aec3-443d-832d-875bb31af97a
Errors
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