I'm not sure this is a bug. It looks like the dock is just misconfigured so try:
gsettings set org.gnome.shell.extensions.dash-to-dock extend-height true and if that didn't fix it then please try resetting all your customisations back to defaults with: dconf reset -f / ** Changed in: gnome-shell-extension-ubuntu-dock (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2061287 Title: Ubuntu dock: the background color does not cover the edges To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/2061287/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs