BH Firstly, congratulations and MAJOR thanks for making Unity Editor for Linux. My experience has been unexpectedly relatively manageable thus far! My Specs: Lenovo IdeaPad U410 Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz 8GB DDR3 NVIDIA GeForce 610M [GF119M] 1GBKubuntu 15.04 x64 ---------------------------------- So during normal development (when not in play mode) all scene view navigation works fine. tl;dr After entering Play mode though (without pause / frame stepping) and then pausing for a peek into scene view, the Flythrough, Move, and Orbit controls are completely out of whack. They keep advancing/orbiting in just one axis no matter the mouse movements. * This severely impedes debugging and scene analysis during gameplay. * EDIT: This sneaky bug sometimes happens and sometimes doesn't... Also, when it does happen it also seems to affect position/rotation/scaling with the red/blue/green handles. They translate continuously by 1 axis no matter what direction or speed the mouse moves.