After pressing Alt + Tab (and holding Alt to keep the application-level windows in view), the Q key immediately closes all windows of the highlighted application. Firefox for instance doesn't ask for confirmation1 — I prefer clearing all browsing data when closing the browser2 and have lost several sessions (profiles) when accidentally hitting Q (which presumably is located next to Tab on most keyboard layouts).
I don't have any real use for this Gnome shortcut and would only benefit from disabling it entirely.
1 'Confirm before quitting with Ctrl+Q' in the Firefox settings
2 'Delete cookies and site data when Firefox is closed' in the Firefox settings
Gnome 43.2
