I've noticed this a lot, just today I was doing a hover animation (using CSS) and for some reason my navigation and input elements all fade while hovering over

I've noticed this a lot, just today I was doing a hover animation (using CSS) and for some reason my navigation and input elements all fade while hovering over this one item. Not sure if it's a webkit bug (it's the same in the latest Canary build too as well as Safari) or maybe it's a bootstrap thing as every site i've seen this problem on happened to be using bootstrap.