Comment 103 for bug 1769383

I wanted to chime in to report that the released bionic fix ( gnome-shell-extension-ubuntu-dock_0.9.1ubuntu18.04.3_all.deb ) has indeed seemed to correct this issue on my system. I am running the stock Ubuntu dock variant and not the dash-to-dock extension version, which is what I suspect may be a continued cause of problems for others are still having the issue.

Within the last two or so weeks the issue was inexplicably occurring with such a high prevalence that I thought I was going to have to switch to a new desktop environment. I had the password prompt on the shutter screen disabled, and in that case once the dock appeared above the shutter the only way to regain control of the system was to drop to a shell and run "killall -HUP gnome-shell."

Thankfully, disabling transparency effects for the dock did remedy the issue. I re-enabled transparency with the patch and things seem to be working fine. I have only had to restart Gnome once because of an incident where the shutter would not raise correctly, but the dock was not visible so I cannot say if it is related to this or just a one-off fluke.