I also facing the same problem. Downloaded 18.04.1 LTS (Jan 6, 2019) Codename : Bionic
It happen when I tried to change taskbar layout from default (at left side) to bottom. Yes, I tried to put the taskbar at bottom then it crashed. I cannot click "Setting" icon, or click "change background" from desktop display. The icon "setting" (the gear icon) displayed on taskbar but if I click it, the window not display. I have already remove gnome-control-center, and reinstall it. Still not working, same result as above. PS : I capture my full window, and strangely enough that "setting" window also automatically captured. ** Attachment added: "window screenshot" https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1755536/+attachment/5227184/+files/Screenshot%20from%202019-01-06%2017-11-39.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1755536 Title: gnome-control-center is not open ubuntu 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1755536/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs