It is the default as on Plasma. It says “Quit”. Other apps with multiple windows opened behave as expected but not Obsidian.
In my case, Ctrl+W closes the current tab instead.
I have tried this on Windows as well with a fresh installation of Obsidian.
- Ctrl+Q does nothing as with other apps on Windows.
- Ctrl+W closes the current tab.
I have also tried this on GNOME. Ctrl+Q closes all the windows in all apps.
Looks like the Ctrl+Q shortcut has been overridden to close all windows regardless.