In screenshot blocks are overlay my 3d widget. I want to widget is overlay blocks.
I am bumping this post. I am having the same issue.
This is by no means a perfect solution, but I’ve achieved this by using a Scene Capture 2D to capture the widget, then use the resulting render target in a transparent material with “Ignore Depth Test” checked. You can then apply this material to whatever mesh you want and it should draw in front of all other geometry.