Some menu items disappears
Sometimes some menus disappears. See screenshot.
Their keyboard shortcuts, like CMD-K in the View menu, stops working so they seem to be disabled rather than just invisible.
MiniZinc IDE 2.7.2 (but this is not a new problem), macOS 13.3.1, Intel. Two external displays, MiniZinc IDE on one of the external displays.

I haven't been able to reproduce this so far - do you have any steps that would allow me to reproduce this consistently?
I have not seen any obvious pattern.
(possibly related: the IDE often comes in a state when it cannot be quit, perhaps it just inactivated the Quit menu choice, similar to what it does when the Coursera submission dialog is active)