So after a bit of testing and research, it appears that scene capture can’t see screen space widget (or anything in the viewport for that matter).
World space still works but you need to orient the widget towards the camera to get the same effect.
But for a reason that I don’t know, screen space widget can’t put themselves in front of the other widget’s image.
I tried messing with the z order layers but it didn’t work.
I’ll try to help you with that as much as I can