I have recently stumbled across this problem, too and it reminded me of a problem I encountered in another software, where only the screen went black.
Turned out the other software was using quick time viewer for displaying the window and due to some changes in Win11 or graphics drivers the older version of qt would not work properly anymore.
But not sure this is the same problem here.
I tried reinstalling version v.3.5.8 (manually deleting the vesta folder) unpacking the v.3.5.8 (fresh downloaded)
I tried updating to v.3.90.5a
I tried running vesta as administrator
But the problem persists. I cannot render any structures any more. This is really annoying at the moment.
Any suggestions what to do?
Best
Stefan