My computer running on Linux - Kubuntu 18.04.2 (with KDE)
Minecraft Launcher (official .deb) version 2.1.5410
When you want to create/edit a profile, the browse button in the profile settings doesn't work. It simply change color, but it does nothing else (as shown in the screenshot above).
Open the file directory, I guess.
- Start the launcher on a computer that runs Kubuntu
- Create a profile
- Try to use the "Browse" button