[BUG] Irrecoverable Sessions if Toolcall canceled before completion

[zazer0]

Environment

• Platform (select one):
  • [x] Anthropic API
  • [ ] AWS Bedrock
  • [ ] Google Vertex AI
  • [ ] Other:
• Claude CLI version: v1.0.22
• Operating System: Ubuntu 24.04.2 LTS + MacOS
• Terminal: Wezterm, Terminal.

Bug Description

• If a Toolcall is interrupted by user before finishing, the session becomes corrupted and progress is irrecoverable.
• This was incorrectly marked as resolved previously (but the issue still exists, per screenshot).

Steps to Reproduce

1. Start a Claude Code session, initiate tool call action (e.g, delegate subtask).
2. Type CTRL+C before it completes.
3. Observe that any following input will result in a tool call error; the session is now unusable and not possible to recover.

Expected Behavior

• Session will handle tool call interruption without becoming corrupted.

Actual Behavior

• Session becomes irrecoverable after interrupting a Task tool call (despite it exactly matching the expected workflow of interrupting a normal message).

Additional Context

• This was supposedly fixed in #473 - but per attached screenshot, is not actually addressed.
• The suggested "esc, then pick a previous message" does NOT work - it reverts all progress made.
• Since progress made was 3x 270k tokens - losing this is pretty hard to accept as a paid feature.

Screenshot:

[igorkofman]

Hi there, is this still happening for folks? Could you provide more precise repro steps?

A feedback report submitted with /bug would be really helpful for tracking it down.

[zazer0]

Seems to have been resolved. Thanks for the fix!

[github-actions[bot]]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.