When using the mouse (for pitch and roll) to control a Helicopter in VR Training, after a few minutes, it becomes less responsive for rolling up to the point where it cannot be used anymore. Keyboard controls keep on working and seem to be not affected. This can also be reproduced in Editor placing a Pawnee in the Virtual Reality map (Stratis and Altis seem not to be affected).

I also tested 1.50rc and this bug is present there, too.