RDCMan v3.21: Alt menu shortcuts interfere with Polish characters

[NefilimPL]

I am currently migrating from RDCMan v2.93 to v3.21.
In RDCMan v3.21, keyboard shortcuts such as:
Alt+E open the Edit menu
Alt+S open the Session menu
This causes problems when typing in Polish, because Polish characters are normally entered using combinations such as:
Alt+E → ę
Alt+S → ś
Instead of typing the character, RDCMan opens the corresponding menu.
I did not have this problem in RDCMan v2.93.
Would it be possible to add an option to disable, remap, or change these menu shortcuts?

[NefilimPL]

-mstsc

fixes it but that's not solution and create problem from #1003