I had trouble installing this on Linux, where I had desktop scaling set to 200% (in Retina parlance, a "Looks like 1920x1080" mode on a 4K monitor). The installer opened a window that was too small to see its content. Specifically the button to accept the T&Cs was out of the viewport, and the window could not be scrolled or resized to include it.
The same applies when the application is then run. It takes no notice of desktop scale, and thus the user interface elements are far too small to use on a high resolution monitor.
Tested: current version (3.18.1) with included Java 10, on Ubuntu 18.04, in Gnome.
BTW JAR-only version with OpenJDK 10.0.2+13 failed with missing stuff:
Exception in thread "main" java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper