On UB 25.04, it’s (temporarily) no longer possible to switch the display from one language to another from the Budgie Control Centre.
If, like me, this feature is useful to you, until the problem is fixed, here’s a quicker way to implement the workaround proposed in the release notes:
Launch the terminal (Ctrl Alt t) and enter this line:
gedit .bashrc
Copy and paste this line at the end of the file to add an alias and save the modification:
alias sl='_sl() { localectl set-locale LANG=“$1”.UTF-8; reboot; }; _sl' # Set Locale
Next time you open a terminal, just type sl fr_FR, for example — for the list of variants, enter localectl list-locales.
The system will reboot in the language you selected.
If you didn’t have to reboot, it would be faster than from BCC… 