umg - click on overlapping components

Hi. How can I make multiple overlapping umg components receive mouse/touch inputs?
Currently I have two overlapping Borders on a CanvasPanel, both have OnMouseButtonDownEvent implemented.
However on the overlapping part only the Border on top gets the event. The IsHandled return value doesn’t seem to do anything. I’m using 4.4

Question2: Are there blueprint functions to use the Geometry and PointerEvent I get from the ButtonDown and other events or that part is not finished yet?