ID: PF-20261104-B10
Title: Cannot collapse event section
Kind: bug
Workflow: untriaged
Created: 2026-11-04
Evidence: unknown

Request:
When events are enabled, the composer’s events expando cannot be closed again.

Sources:
- https://zenmemes.com/posts/thread-20261103040413-a008e701
- https://zenmemes.com/posts/thread-20261103082445-475cead1

Notes:
Intake: docs/feedback/triage/2026-11-04_proposals.txt (approved by maintainer 2026-11-04). Local snapshot review only; reported runtime/device conditions were not replayed.
2026-11-04: Replayed during calendar Stage 2 (docs/plans/calendar/calendar_step4_implementation_summary.md) in headless Chrome on /compose/thread with event support on, at 390px and 1280px widths, empty and with the event prefilled (server-rendered open), before and after adding the Until field: the Event disclosure opened, closed and reopened on summary clicks every time. Not reproduced; the reported device and browser are unknown, so the item stays open for a replay on the reporter's device.