@Rex, Just found below information, and when I removed the gnome-calculator, I found gnome-characters also hang at 'Doing' status, so it might be related to lower level app.
Doing today at 04:46 EDT - Ensure prerequisites for "gnome-characters" are available -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1828604 Title: Lenovo T490S and X390 GM do not have Firefox.App store install errors out To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1828604/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
