dense sage
I rebound Move Floor Down to Shift+A and it will only work when doing A+Shift, not with Shift+A. (So hold A and only then press Shift).
No such issue with Move Floor Up on Shift+E (which works when doing either Shift+E or E+Shift) or the few other keybinds I tried.
marsh harness
Likely because "A" is also assigned to something else in you keybinds?
This is a known issue with ctrl key not working as expected and also triggering the "key" without shift is a bug.
https://discord.com/channels/1000343719314198548/1262014495660965898