It doesn't fill in the background and has nothing to do with Adobe.
You could bring the cut-outs back into Photoshop. I tried that, but this SAM tool reduces the size of the cut-outs slightly, so the cut-out won't match original image dimensions.
I know. Masking and selecting is something you do in Adobe products and Adobe will be coming out with their own version of this (if I were a betting man)
You could bring the cut-outs back into Photoshop. I tried that, but this SAM tool reduces the size of the cut-outs slightly, so the cut-out won't match original image dimensions.