I recently got a new Surface 4 and I'm experiencing some issues with the display. When using Firefox I often have black pixels and bigger black areas on the screen (see pic). Also the Firefox Tab Bar only appears after mouseover.
Mostly this happens when using Firefox but I also experienced it in Windows Explorer (pic).
Any ideas what might be the problem and how to solve it?
All latest updates are installed as well as for Windows and Firefox.
Many Thanks in advance