Posted on July 13, 2017 at 22:59https://josm.openstreetmap.de/ticket/14821#comment:1

Posted on May 27, 2017 at 00:22//replacing with the cross platform look and feel will fix the JVM crash UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());//UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());...