As far back as Designer Pro 11, you could copy and past an image with a transparent background.

I'm not sure about the in-between versions, but XDP16, XDP17 and Designer Pro+ don't seem to allow this.
The transparent section is pasted as a black background.

I'm sure I know the registry setting and I have changed that.
But, still cannot copy and past an image with a transparent background into XDP16, XDP17 and Designer Pro+.

Does anyone know if there's a fix for this?