When the close flag could not be saved (storage full), a reload took the
previous page load for a running duplicated tab and left its saved writes
unsent. The page now remembers that page load and its 30 s touch takes it
over as soon as its record is closed, stale or gone, so the session's
retry sends the writes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>