You’re trying to get a slot the size box is in, but the size box is not in a size box slot. Here’s a tongue twister for ya!
Also, decide what you need: Size or Padding - two very different things.
Is this what you’re after?
In this very example, the
Canvas Slot will know the size of the
Or you could tick
Size To Content and the
Size Box' size will be used (if overriding), or get rid of the size box overrides and use the image size as desired size. The auto-sizing canvas slot would respect that.
But then again, no clue what the end goal here is.