On Linux, scrolling in diagrams does not work after the first mouse click
A bug in FX/SWT causes FXCanvas to swallow all scroll events that should be forwarded to the FX scene. The issue seems to be a bug in FX/SWT. On mouse click, a gesture begin event is sent to FXCanvas, who disables ScrollEvents for the duration of the gesture. However, no gesture end event ever arrives, meaning that ScrollEvents become disabled permanently.