Yes, that mesa bug looks about right. Here's a photo I snapped of firefox's address bar. I hit 'a', which brought up history entries in a drop-down list. When I deleted the 'a', the history list is removed, and these pixels were momentarily visible during the repainting.
The static view of firefox is normal enough. The pixeljunk only happens on some screen changes, but not all. Thanks ** Attachment added: "IMG_20200226_154451.jpg" https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1864274/+attachment/5331419/+files/IMG_20200226_154451.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1864274 Title: crunchy pixels To manage notifications about this bug go to: https://bugs.launchpad.net/mesa/+bug/1864274/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
