You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Prompt HistoryArea: what it touches
Bug FixesKind: in v2.1.234,
Bug FixesSection of the release
What
Prompt history entries written by Claude Code itself, rather than by you, are now recorded without arming the undo. Absorbing queued prompts mid-turn and draining the queue when agents are killed no longer make themselves the target of the next history undo.
Details
History add gained an option controlling this, passed false on both automatic paths; those writes also stop marking the last add as deduped.
Evidence
armUndo
Strings lifted out of the shipped bundle, so the claim above can be checked against them.