I am trying to run a javaFX application on a raspberry pi 3b+ with a 7" 1024x600 touchscreen by Lebula. When I plug a mouse in, the application works as normal, but, when I try to use the touchscreen, it does not work. The touch screen does work on the regular desktop, however. I am using mouse events in the javaFX code instead of touch events, but I don't think that is the problem. How can I make the javaFX application accept input from the touchscreen?
I think there is a basic problem with the support of the touchscreen under "Raspbian buster". My JavaFX application did not respond to the touch events and I thought the problem was with the application until I tested touch screen support on existing applications. Some widgets respond to touch, but some do not. The pulldowns will be e.g. is displayed, but the items it contains do not react to touch. I have the "official 7 inch touchscreen". Install Raspbian strech and test with it.