Glowing Blue Box on Favorites Bar

[CMF Seattle]

I know I saw something about this but now can't find it. I hate the glowing blue box that outlines my selection from the Favorites Bar. It takes several clicks before it actually selects one. Does anyone know how I can get rid of it?

 

[C DM]

Does that kind of thing only appear there for you? Do you have any accessibility options enabled?

 

[beernut]

Screenshot example?