[BUG] semi-daily bug report

Environment

• Platform (select one):
  • [x ] Anthropic API
  • [ ] AWS Bedrock
  • [ ] Google Vertex AI
  • [ ] Other:
• Claude CLI version: v0.2.122
• Operating System: Linux 6.12
• Terminal: gnome-terminal

Bug Description

/compact on a resumed conversation causes this error:

Error: Error during compaction: Error: API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.309.content.0: When thinking is disabled, an assistant message in the final position cannot contain thinking. To use thinking blocks, enable thinking in your request."}}

Context

I had interrupted the previous on-going prompt preceeding /compact because the % context available appeared all of a sudden and for some reason "Interrupted by user" also shows on /compact.

Trying /compact again failed.

workaround: It worked for me after I told claude to just tell me a quick "Yes" without doing anything, and trying /compact after that