PopupMenuManager key-focus signal is leaking
On current F39 Wayland gnome-shell, this notify::key-focus
handler appears to be leaking: https://gitlab.gnome.org/GNOME/gnome-shell/-/blob/92780927cdb07f37d2d41f70cabe6152b92ce214/js/ui/popupMenu.js#L1286
It is called hundreds of times per frame, and after a few days of uptime it's called thousands of times per frame, causing long stalls.
Zooming in: