I tried to change the version in profile from 1.14.2 to 1.8.9, but it didn't work AT ALL!
Unable to change Installation on play screen
Launcher 2.1.5320 will not delete or edit configurations
I can't change my profile in the main menu (Debian 4.9)
I'm not able to change any settings or versions on the new minecraft launcher (linux)
Stuck on the latest minecraft version