Okay. The same problem with the flashing dock happened in all cases. Before I reinstalled "Dash to Dock", I managed to reproduce the problem as in the video above. Then, I installed the aforementioned extension (I disabled the Ubuntu dock previously to avoid conflicts) and tested both Dash to Dock on my own and Ubuntu Dock. Both had the same problem.
Attached is the information requested. ** Attachment added: "localext29.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1905186/+attachment/5437366/+files/localext29.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1905186 Title: dock and top bar flashing non-stop at fullscreen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1905186/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs