Okay, so this must have something to do with inverting mouse buttons on Windows Control Panel. Becasue i can not rotate camera or move objects with mouse buttons. It happens in cell window and also happens in actors preview window. I just can not rotate and mouse buttons only open config menu but can't get any rotation at all.

Any help would be much appreciated, because this issue is starting to get... irksome.

EDIT: Confirmed - this is a CK bug that happens when you invert mouse buttons in control panel (Windows). Don't know if someone found a workaround though.