That’s a Windows system level behaviour but there are workarounds.
There was a Feature Request to stop this happening:
A way to disable/override Windows default Alt menu command please 🙏
That contains two possible workarounds:
A way to disable/override Windows default Alt menu command please 🙏 - #2 by AhabGreybeard
(Also read the two replies after that.)
and this workaround:
A way to disable/override Windows default Alt menu command please 🙏 - #6 by Celes