i just updated TMS Component PACK from version 188.8.131.52 to 184.108.40.206 and noticed glow on TAdvGlowButtons doesn't go away when you leave buttons...
If you move mouse slowly, everything works fine, but if you do it a little bit faster and move over several buttons, you will get something like this (several buttons stays highlighted until you move mouse over this buttons again):
for your information : problem is solved when you remove line 4763 in advglowbutton.pas (TAdvCustomGlowButton.MouseMove) :
FMouseInControl := true;
I have been unable to reproduce this problem here so far. I retested this for example with our Office 2007 and Office 2010 ribbon here but don't see this happening. What exactly is different in your app from our demos?