After adding a non-Admin user to my computer’s Ubuntu Mate installation, I discovered two things, one big and one small, that don’t work the way I think they should.
First, while “officially”, in 25.04, you can set different languages for each user, in practice, that simply doesn’t work. The installation simply ignores everything you tell it about specific users’ language preferences, and forces one language on all. If you try to use sudo dpkg-reconfigure locales to change settings to “no system language”, the installation ignores that, too. See here: OS simply ignores me when I try to set a non-admin user's language to a different language This is very frustrating for people trying to use Ubuntu Mate in a multilingual environment.
Second, If you have to do on reinstall on a computer with several users, you can “import” the main admin account well enough, but the Mate User Manager won’t let you attach new user accounts to existing user directories in /home . You have to open a terminal and use the adduser command for that. Whoever came up with that rule apparently never imagined that it might ever be necessary to do a reinstall on the system with several use accounts.
