Before filing the bug upstream, I wanted to ensure that I see the corruption also with all addons disabled. But I don't: after I had disable all addons, I didn't see any corruption for two weeks. Then I reenabled one of the many versions of the weather extension and the corruption reappeared on next login.
So I'm currently suspecting that this extension is the culprit. https://github.com/canek-pelaez/gnome-shell-extension-weather ** Package changed: xorg (Ubuntu) => gnome-shell (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1095106 Title: Random display corruption in gnome-shell widgets To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1095106/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs