User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101129 Firefox/4.0b8pre Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101129 Firefox/4.0b8pre It seems that the trench on the right side of the screen (the side with the close panorama and search buttons) is too narrow; one can position tab groups partially on top of said buttons. This also reveals another (possible) bug: the open/close button has a higher z-index than the group background while the search icon has a lower z-index. I presume that this bug depends on (and/or will already be resolved in) bug 610271 Reproducible: Always Steps to Reproduce: 1. Create a tab group that is >300px tall 2. Drag said group to the top-right side of the screen 3. Observe the overlapping icons

mitcho, I think we can close this now that the exit and search buttons have their own little tray, yes?

Indeed.