I'm seeing a lot of ugly behavior with both my laptops, which are running two windows each. The mouse is jumping to the border of the window where it touches the other window, same as previous versions. I also now get the camera spinning that other's mention, and I can confirm it seems to happen if I click-and-drag to the edge of the window. It doesn't seem to affect single clicks, so I can loot, etc, but camera movement is problematic. Also, I'm noticing the mouse seems to be affected at random in this version, I get really fast cursor movement sometimes, and other times it's normal. However, I can't seem to track down a cause for it. I'll keep testing, always got 1.8e archived if I get too frustrated.