I have an .fla created before the lastest update. This screenshot shows the .fla opened in the latest version (20.0). The scene/stage aren't diplaying- with the exception of the scene edge- which does animate.
I'm running Windows 10 ver1607 which didn't seem to be a problem before, otherwise I meet the minimum specs.
Exact issue experienced as well after updating Animate today. My system specs: windows 10 Pro build 14393
I am also having this issue, when I set my screen size to Fit in Window I can se parts of my stage underneath thebig white box that seems to be filling the screen but cant get rid of the white box.