Since upgrading to macOS 27, I have encountered native menus becoming unresponsive. It is reproducible via a short sequence of mouse actions in Apple’s TextEdit application. The following linked zip contains a Python reproduction script and a shell launcher that prepares its dependencies: https://drive.google.com/uc?export=download\&id=1q9DtRC7zpnhK50v4VmvuRAf2sq6I9jaz Expected: The menu continues responding to mouse movement, clicks and Escape. Observed: The menu becomes unresponsive after the sequence. Could anyone confirm whether the attached reproduction triggers the issue on their system? Is this a known AppKit menu-tracking issue, and are there any suggested workarounds or additional diagnostics that would help investigate it? Thank you.