Ticket #21649: screenshot.png

screenshot of josm when the error occurred. I'm using i3, so some parts are tiled. On the left, in the background, is my normal josm view. Right, in the background, is the window I guess it tried to open for 'Help'. On the right-middle, in the middle layer, is the history window for way 963827568. On the top layer, on the left, is the error report window dialog.