Bug Why is Worldspace Canvas always behind ScreenSpace Overlay

I've a Joystick in ScreenSpace Overlay Canvas and a few Popup Elements in WorldSpace.
The Joystick is always rendered on top so i can't click WorldSpace Buttons because the Joystick gets rendered on top of them if i click something. Is it inteded like that or do i miss something.

Changeing sorting order doesnt work.
Putting the Joystick in ScreenSpace Camera would work but gives sometimes weird behaivour on mobile.
(No interactable joystick or the joystick moves in the bottom left corner and wont be moveable)

So is it possible to render Worldspace canvases over ScreenSpace Overlay Canvases?