Ctrl+Alt+Esc (kill window) causes segfault in libgdk-3 → Cinnamon crash loop

[vitaligian96-ai]

Distribution

Linux Mint 22.3 (Zena)

Package version

Cinnamon 6.6.7

Graphics hardware in use

AMD Radeon RX 7700 XT

Frequency

Always

Bug description

The crash occurs in libgdk-3, triggered by the kill window shortcut handler in Muffin.
The shortcut does not appear in gsettings (org.cinnamon.desktop.keybindings.wm) and seems hardcoded.
Got help from Claude

Steps to reproduce

1. Press and kepp it pressed Ctrl+Alt+Esc to activate the "kill window" cursor, which doesn`t work
2. Cinnamon crashes immediately

Expected behavior

Cursor changes to crosshair to allow killing a window

Additional information

Actual behavior:
Cinnamon segfaults and enters a crash/restart loop (multiple core dumps within seconds)

Relevant log (journalctl -b -1 | grep -i cinnamon):
cinnamon[3135]: segfault at 10000 ip 00007fd047c45b65 sp 00007ffcbb400150 error 4 in libgdk-3.so.0.2409.32[8bb65,7fd047be4000+84000]
Process 4544 (cinnamon) of user 1000 dumped core.
(repeated ~10 times every ~2 seconds)

[leigh123linux]

Ctrl+Alt+Esc is cinnamon restart. not xkill
Holding the key down for too long restarts cinnamon multiple times, sometimes causing a backtrace.

$ gsettings get org.cinnamon.desktop.keybindings.media-keys restart-cinnamon
['<Control><Alt>Escape']

@mtwebster Can we debounce the key so it only fires once