SUMMARY
Duplicate keyboard accelerators in the file menu break Alt+F S.

STEPS TO REPRODUCE
1. Open file in kate
2. Press Alt+F S
3. Save is highlighted but not activated

OBSERVED RESULT
To actually save, I have to press enter after highlighting the save item.
With the file menu open, repeatedly pressing S switches the highlight between Close Other and Save As
The same thing also happens when I press A (switching between two menu items - Save As and Reload All).

EXPECTED RESULT
Save is activated and the file is saved immediately.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux with kde-unstable repo
(available in About System)
KDE Plasma Version: 5.90.0
KDE Frameworks Version: 5.246.0
Qt Version: 6.6.1

ADDITIONAL INFORMATION
Alt+F Q works fine in kate and quits the application as expected. So does Alt+F C for closing the file. It just seems that the save menu item (and the other items above) are bugged.
The keyboard accelerator for Save (Alt+F S) and Save As (Alt+F A) are probably the more important keyboard accelerators to keep, due to consistency with other word processing applications.
My LANG is EN_AU.UTF-8 if that means anything.