Yea. I have most apps excluded from WB. Winamp, Firefox, et al. Just too many weird glitches that are likely, in the end, the result of something I didn't do, or did, or wasn't supposed to do, or was supposed to but didn't.
In the end, I just disable most apps from being skinned. Easier, for me, than wondering why some button is missing or glitching-out or why I can't even close the browser (weird!) unless Firefox excludes WB, and so forth. Long list. hehe