Thanks for your report! It's the accountsservice package which is broken somehow. I downgraded accountsservice to the version used in disco, and then it worked as usual.
** Changed in: gnome-control-center (Ubuntu) Importance: Undecided => High ** Changed in: gnome-control-center (Ubuntu) Status: New => Triaged ** Package changed: gnome-control-center (Ubuntu) => accountsservice (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to accountsservice in Ubuntu. https://bugs.launchpad.net/bugs/1842212 Title: I can't change "Formats" in "Language and Region" Status in accountsservice package in Ubuntu: Triaged Bug description: If I try to change format from "Ukraine" to "United Kingdom", system offers me to restart to complete the changes, but after this actions I don't see any changes. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gnome-control-center 1:3.33.90-1ubuntu2 ProcVersionSignature: Ubuntu 5.2.0-15.16-generic 5.2.9 Uname: Linux 5.2.0-15-generic x86_64 ApportVersion: 2.20.11-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sun Sep 1 17:12:15 2019 InstallationDate: Installed on 2019-09-01 (0 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190830) SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1842212/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp