Hey, ever since i play this game on Linux i have this visual glitch for lets say half a second, right before the game starts and you choose the location to spawn your commander. Also i think i noticed this when i open the Picture-In-Picture Viewer. Arch Linux Intel i7-2600 CPU @ 3.40GHz Nvidia GTX 660 (Driver 346.35)
Yeah, that's always been like that as far as I can remember. But like you said, it's only for a very short time. I had much trouble grabbing this screen since I had to time it just right. I thought it was normal. It doesn't have any lasting effects anyway.
Yeah, it was not easy to capture... I've done a video with simplescreenrecorder and then made a screenshot while i paused the video ;-)
I checked again today and i notice this also when opening the picture-in-picture viewer and when you receive a ping or other events and you click on it, so that you see a mini-map. So basically everytime a new window/view of the map is opened. Maybe it has something to do with how the opengl context is created, but i dont know anything about this...