Changes in Widget-Controlling via Mouse and Keyboard after switching to vr

Hey there, I am using a Widget with some Buttons and Slider. Usually whenever I open this widget with my 3rd Person character I can switch between my buttons and Sliders with my keys and can press them with my mouse aswell.
But now i am switching to the VR-version and use the MotionControllerPawn from UE’s VR-Project with the same Blueprint commands.

I get access to my button aswell and can press it with enter but I can not switch between the Buttons and sliders with my Keyboard anymore. Is there a way to change this? I could imagine that there are some default values which are needed to be changed but I can not find them.