This sounds strange but during recent months it happened more often to me.
Sometimes during hectic gameplay when pressing left and right mouse button together and (i assume) fast camera movement, my character runs backwards. What I mean by that is that if I center the camera behind my character and press left and right click, the character rotates by 180° and moves towards me. The expected behavious would be that it just runs forward.
I can revert that by reloading ui so I assume that this is some kind of UI issue?
Any hints are greatly appreciated.