Keyboard shortcut to close application menu conflicts with keyboard layout switching shortcut

Distribution

Mint 22.1

Package version

6.4.8

Graphics hardware in use

irrelevant

Frequency

Always

Bug description

The default shortcut (Super key) to close application menu conflicts with default keyboard layout shortcut (Super+Space), making it impossible to switch keyboard layout while in application menu, because the menu closes before the user can finish typing.

Steps to reproduce

1. Add a second keyboard layout if you have only one (System Settings > Keyboard > Layouts)
2. Open application menu by pressing Super (the key with Windows logo)
3. Type something into the search bar
4. Switch keyboard layout by pressing Super+Space

Expected behavior

Pressing Super+Space should change keyboard layout, application menu should stay open.

Additional information

I am assuming this happens because the close menu shortcut triggers on key press, causing the conflict with all shortcuts with Super. It should trigger on key release instead.

Reproduce the conflict in Mint 22.1 with Cinnamon 6.4.8: open the application menu, focus its search, and press Super+Space after adding a second keyboard layout. Trace the application menu's Super-key close handling and keyboard shortcut interaction; done means Super+Space switches layouts while the menu remains open.