Pages are just white

[Ro]

Since the last update certain pages are just white, e.g. startpage, other websites as well. I deleted all the addons, the cache etc, but didn't help. Fix this bug asap! Thanks!

In other browsers as Brave, Chrom, Edge: no issues.

[siffemcon]

Does that also happen in Troubleshoot mode (https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-...)?