[draw image] arguments - x/y origin

The helpfile for [draw image] states that you can use 2 floats for x/y origin of the picture after the path to the picture. I tried it, but only the orange selection rectangle moves to the new specified coordinates. The picture is always displayed at 0,0 (or the structures float x float y). Sometimes it flickers a bit, like the image was moved to the new coords but then reset to 0,0. It would be great if that worked, if someone wanted to make a image-knob for instance.