Bug: Control Options > Map > Floor Up/Down

[Eddy.7051]

The control options allow me to bind "Shift" or "Shift + _____" as Map Floor Up or Map Floor Down. But after I save either of these key binds, I am unable to change the map floor with these key binds when I have the map open. "Alt" and "Ctrl" work when they are bound to Map Floor Up or Down, so I am not sure why Shift behaves differently.

I use "Shift + Space" for Swim Down, Spectate Camera Down, and Mount Ability 2 - and this key bind works for those controls. I would deeply appreciate being able to use "Shift + Space" for Map Floor Down as well because I like all downward moving controls to be consistent with their key binds.