higher level CanvasLayers do not block input from lower layers when using WindowDialogs popups

[solorvox]

Godot version

3.3.2.stable.official

System information

Linux Mint 20.1 64bit

Issue description

Higher level CanvasLayers do not prevent lower CanvasLayers from receiving input with mouse_filter set to stop. Being a higher drawn level, it should block any input (focus and click events) from getting sent to lower layers.

Steps to reproduce

Using attached project, click play. Click any button and a the top layer (canvas layer 100) ColorRect becomes visible. It has mouse_filter set to stop. Note you can still interact with lower layer (1) canvas buttons and click them.

Minimal reproduction project

canvas-layer-bug.zip

[Calinou]

See also #36891 and #45400. Can you check if either of those issues are duplicates?

[solorvox]

I saw those two, but don't think they are the same issue. I think my case has to do with WindowDialog moving child index when popup is called? Not 100% sure.