Javafx.scene.control.ScrollBar onMouseEntered Behaviour incorre

Question

Look at this code:
def volume:Slider=Slider {
     min: 0.0
     max: 1.0
     value: 0.5
    onMouseEntered: function(MouseEvent):Void{
        //doSomething
      }I would expect, that when I enter the slider, then the action "onMouseEntered" will invoked - but this is not the case, when hover over the slider-button which is indeed a part of the whole slider component.
The same goes for all mouse/key-events of that component - only the sliders bar without the slider-button (which is definitely a part of the slider) listens to these events.
Is that a bug or intention? Should I report it to jira?

Answer 1

I tried a workaround for that case but this does also not work:
I have put the node slider within a node and define there typical mousevents:
var mySuperNode:VBox = VBox{
    nodeHPos: HPos.CENTER
    content: [slider]
// this does not work - mouse entered never be called when hovering over the node "mySuperNode
    onMouseEntered: function(MouseEvent):Void{
        println("why does this not work?");
Stage {
    width: 400
    height: 150
   scene: Scene {content: mySuperNode}
}{code}