When trying to look around (right-click + mouse move) or move objects (left-click + mouse move) the first time we move the mouse (ex: the first pixel) while having the mouse button pressed a “mouse drag down” motion is created even if I move the mouse horizontally.
The mouse offset is even more visible if we try to create a selection box (left-click + drag) on the scene viewer:
This is running on Arch + KDE Plasma 5.
I currently cannot try Gnome.