Claude Code silently deleted its own shared task-store files ~5 seconds after a teammate agent finished the last task, four times, with no Task tool call in the logs (GitHub #88346)

1. Instruction given

   No explicit instruction tied to the deletion — a lead session had created tasks in a shared task store and a teammate agent was working through them normally; no command to clear, archive, or resync the store was ever given.

2. Expected behavior

   Task JSON files under a shared team/lead task store should persist until a user or an explicit Task tool call removes them. Completing the highest-numbered task in the store should not trigger any deletion of the store itself.

3. Actual behavior

   Across four separate occurrences on Claude Code versions 2.1.234-2.1.237, task files under `~/.claude/tasks/session-<id>/` disappeared roughly five seconds after a teammate agent completed the highest-numbered task in a store it shared with a lead session. The reporter's own transcript review found no Task tool_use of any kind in any session during the deletion windows. Two distinct patterns occurred: the entire store emptied with `.highwatermark` rewritten to match the just-completed task's ID, or a single file was removed while the watermark was left stale. All four affected stores were shared team/lead task directories.

4. Damage

   Task-tracking state for shared multi-agent sessions was wiped outright — not moved to trash, no backup — losing the record of what had been assigned and completed across a lead/teammate task store. No source code or application data was affected; the loss was confined to Claude Code's own internal task-coordination files.

Classification

Agent

Claude Code

Failure mode

Destructive Action

Root cause

Other

Domain

Other

Source

Github Issue