NSMenu's menuNeedsUpdate fires only once per open and the default Timer mode pauses while tracking, so the progress bars sat frozen once the dropdown was up. Tag each pop-render row with a stable identifier, add a .common-mode 0.5s timer on menuWillOpen that re-reads ~/.ac-pop-renders/ and rewrites titles in place (no structural mutation mid-tracking), and tear it down on menuDidClose. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>