The problem is caused by Wayland. For whatever reason, the bundled QT version with the Wayland plugin will just cause the application to hang. It happens on ArchLinux running Plasma 6 as well. The fix is to force X11 by setting the QT_QPA_PLATFORM environment variable to xcb. To run the install, just run this:
env QT_QPA_PLATFORM=xcb ./010editor -install
After the install finished, edit the *.desktop file at ~/.local/share/applications/010editor.desktop and change the “Exec=” line to include the environment variable as well. So if it looked like this:
Exec=/opt/010editor/010editor %f
Change it to this:
Exec=env QT_QPA_PLATFORM=xcb /opt/010editor/010editor %f
This should allow you to run 010editor just fine. 