When setting a negative x, y value for transition, there’re following symptoms.
a. The contents of Dialog appear and disappear statically positioned*
b. Dialog’s size changes (e.g. onWidthChange is called ), 0 (when it’s hidden) to max width (when fully visible)
c. Slot onXChanged: is not called unless x value becomes positive.
*#1 can be improved by setting clip:true to Dialog.
How to reproduce