No I didn't get it to work, hmmm....strange indeed.
The alpha was still in the image and when I used it in "image texture" in Styles window, I was only available to load it in stretch mode, in tile mode it didn't show up at all...well I loaded it in stretch mode then, just to see if it would follow the layer movements from the cloned layer, and it did

unfortunately all transparence part were filled with white color

I have'nt tried to experiment with it futher, I just can't imagine what was wrong.