For some reasons I decided to reinstall Opera (purge and deleted settings), and wasn't able to set the UI language anymore.
Normally, there's a checkbox behind the "three points menu" besides each language item which could be marked to use this particular language as UI language, but this checkbox isn't there anymore. There are just the move options left.
So I tried to do this in Brave browser, but there's the same issue. All my Soluses are affected. Previously set language options are still okay, but unchangeable so far in chrome clones.
Does anyone know the reason? Windows-Opera is working normally.
If someone is running into the same problem - as a workaround you can modify the desktop file (/usr/share/applications/opera.desktop) after the installation is completed. Add --lang=XXafter every "opera" in the "Exec" lines and replace the XX with your preferred language shortcut. For me it's --lang=de to start the browser in German.
