Same problem here. I restarted (successfully) apache2 service a few hours ago, then I moved away from my computer, and when I came back, there was this little buggy window (and it's not the first time this bug happens to me)
** Attachment added: "Screenshot" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1824874/+attachment/5310225/+files/Capture-20191206131522-1920x1080.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824874 Title: undismissable, unclickable authentication dialog left on screen (top- left corner) after policykit authentication [pushModal: invocation of begin_modal failed] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1824874/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs