Ok, after some more testing i've found following bugs:
1. There is a 1px gap between the selection box and the scrollbar.
2. Selected text is drawn with a solid background color, which doesn't blend well with gradient selection background.
suggestions:
3. There's already a skin setting for artwork border color, so maybe it could be used in this view as well.
4. Larger left margin in thumbnail browser would look nicer and more consistent with other lists, but that's just my opinion.