Equipment used :
My computer running on Linux - Kubuntu 18.04.2 (with KDE)
Minecraft Launcher (official .deb) version 2.1.5410
The bug :
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).
[media]What is expected :
Open the file directory, I guess.
How to reproduce :
Start the launcher on a computer that runs Kubuntu
Create a profile
Try to use the "Browse" button
I have also observed this problem on the current release of Ubuntu. I could fill in the text field manually, but the Browse button did not work at all. Neither did the one for Java version.
Doing a bit of research, I get these error messages when I launch from a gterm and press the 'Browse' button: