[Bug] Subagent delegation fails with task ID lookup and API concurrency error on resume

[Daredevll]

Bug Description Delegating to user-created subagents fail - first the subagent's Task Output fails with  Error: No task found with ID:, and then when main agent attempts to resume the task, the Response is API Error: 400 due to tool use concurrency issues. Run /rewind to recover the conversation.

Environment Info

• Platform: darwin
• Terminal: goland
• Version: 2.1.7
• Feedback ID: 62ed641f-e06d-46d5-ae86-c9c7f0880c3a

Errors

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[github-actions[bot]]

Found 3 possible duplicate issues:

1. https://github.com/anthropics/claude-code/issues/16667
2. https://github.com/anthropics/claude-code/issues/16861
3. https://github.com/anthropics/claude-code/issues/14055

This issue will be automatically closed as a duplicate in 3 days.

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🤖 Generated with Claude Code

[github-actions[bot]]

This issue has been automatically closed as a duplicate of #16667.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[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.