Whenever I go to http://htw-berlin.de (the only URL with this issue so far) with Firefox 38 or Chrome Canary 45, the entire screen goes black until I close the tab. But only if the window is larger than a certain size, and not the notebook screen:
My 2013 13" AirBook is connected to a Samsung SyncMaster SA200 screen (DisplayPort > DVI), using it as primary display at 1920x1080 @ 60Hz. The notebook screen runs at native resolution of 1440x900. My OS is Windows 8.1 64bit with Bootcamp 5.1.
It's the same with hardware acceleration turned off in the browsers. I updated the Intel HD graphics driver via Windows Update, but no improvement.
