System Information
Operating system:Win 10 pro 64
Graphics card:Zotac GTX 750 Ti
Blender Version
Broken: 2.80
(example: 2.79b release)
(example: 2.80, a205493426b, blender2.8, 2018-12-03, as found on the splash screen)
Worked: (optional)
Short description of error
Toggle full screen and opening Preference dose not work
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).
Window -> Toggle Window FullScreen
Edit -> Preference