macOS 26.3 black screen problem

[gurduv]

On macOS 26.3 I only get a black screen when the screensaver should begin.
The preview is also black.
I tried with direct link URLs, embedded links and local index.html file

[redeemer666]

Same here... 26.5 developer beta

[thegizzardwizard]

Same - Black screen and after a while it gets a smaller dark square in the upper left of both monitors then just sits there. No web pages will load. Not google, not local pages.

[mrbohnke]

+1