When using the 'standard' tab layout, sometimes the selected tab appears to almost bleed into the content of the website, often-times with background color differences that are barely discernable.
IMO this reads as a GUI bug. At first, I thought it was related to the fact I sometimes use a 72DPI monitor and the thin rule I'd expect to be present between the tab and the website content was simply being anti-aliased away into nothing, but it appears the same way on both my low res and high res monitors.
I'd expect a faint line between the active tab and its content.
