Anyone facing the same issue? How this could be fixed? Tried to do a clean install, but it doesn't help. I'm on Windows 10 with all the recent updates.
It seems it's due to Parallels VM which I use for running Windows 10 & Altium on my Mac.
Since this version is relatively new, I wouldn't rule out a bug. I am currently using 19.0.14 and have no problems.
The only thing I could image that your graphics card does not support DirectX 10.
Check here the System requirements: https://www.altium.com/documentation/19.1/display/ADES/Altium+Designer+-+((System+Requirements))