Extras > Options doesn't display options (KDE Neon)

[routeconverter]

INFO: Cannot invoke NativeInterface#runEventPump(): java.lang.reflect.InvocationTargetException

That is for the failed SWT-Map initialization.

I don't see any error dialogues at any point.

Then there must be an options dialog. I guess it's hidden in some corner of the screen and/or its just a few pixels wide and high.

If you delete the Java preferences below ~/.java/.userPrefs/, it might open with the default size.