Weird Behaviour on Pawn and Player Controller

Okay, so i’ve just converted my 4.10 Project to 4.11 and theres some weird behaviour in my controls:
So my Pawn is just a Camera on a spring arm with a “FloatingPawnMovement” Component.
And on pressing the Right mouse button (InputActionRMB) it shall open the Gate which then moves this Pawn into some Direction. Now theres this weird stuff: I have this “Set ShowMouseCursor” in front of it. When it is setup like this the Pawn does not move (even though the function [AddMovementInput] is fired [tried it with a breakpoint]). BUT if i change the “ShowMouseCursor” on pressed to “True” and on Released to “False” it does move (after i pressed the Right mouse button twice). What kind of behaviour is this? Is there something wrong with my settings or understanding of this? On 4.10 it works as intended.

http://puu.sh/o3v9I/81836da4f7.jpg

Thank you in advance!