OK. Press the button that makes the playlist small. Then put the pointer over the 'enlarge' button, press AND HOLD the LEFTmousebutton. THEN while holding down the LMB move the pointer off the 'enlarge' button, then back on, off, on. See? The GFX moves right by one pixel.
Simple, harmless but annoying when you are making your first skin and you think it is an error you made in PhutusShop, when you swear to JAH there is nothing wrong with your drawings.
Don't ask how I discovered this. I have a talent for finding stupido tings like this.