Mo agreed on the following improvements :

1) with 1.0, the context menu of the stage view appears only when clicking on the AnchorPane root element.
I think it would be better to display the context menu when clicking on the stage view as a whole,
that is, when clicking on the AnhorPane root element but also when clicking on the stage view background image.
Note that this is already the case with the Hierarchy panel.

2) When you first right click, the context menu appears.
Then, the second right click dismisses the popup.
I think the second click should dismiss the first context menu, but then it should display a new context menu on the mouse click point.
This is how behaves NB for instance.