4.1.7 RC: incorrect visualization of overlay image in VISTA

1) An overlay image or a back color don't redraw correctly if auto hide option is checked. The overlay image disappear after the bar is auto hide. The image is redrawded only under the cursor of the mouse

Please can you post the screenshot here? I can't to reproduce this bug.

in Vista is impossible to have two bars at the same time. You can create two or more bars, but after a windows restart, you will have only the last created bar

Try to read this topic. Maybe you have some "bad" values in the registry.