User-Agent: Mozilla/5.0 (Windows; Windows NT 6.1; Win64; x64; en-US; rv:2.0b2pre) Gecko/20100714 Minefield/4.0b2pre Build Identifier: Mozilla/5.0 (Windows; Windows NT 6.1; Win64; x64; en-US; rv:2.0b2pre) Gecko/20100714 Minefield/4.0b2pre When "Tabs on Top" is enabled, the toolbar area falls three pixels short on the left and right of the inner Aero border edge. This looks rather clumsy, and makes it obvious that Aero is extended down below the toolbars, despite them being opaque. In addition, the toolbar area appears to cut off rather abruptly, which increases the notability of the offset. Reproducible: Always Steps to Reproduce: Enable "Tabs on Top" Actual Results: Toolbar area falls three pixels short of the inner Aero border edge on the left and right, and the border does not match the Aero border. Expected Results: The toolbar area should extend horizontally to meet the outer edges of the the inner Aero border. The last two pixels on either side should match the color and opacity of the Aero border. In addition, slightly rounding the upper corners (even if the radius is just a pixel or two) could decrease the notability of the problem. This problem has existed since the Aero theme was first implemented in the nightly builds. It continues to live on in the first beta release of 4.0 and the corresponding nightly builds. Confirmed to occur on Windows Server 2008 R2, Windows 7 x64, and Windows 7 x86.
This is still very much a problem
With the regression outlined in bug #592182, this also applies to tabs on the bottom. Prior to the regression, this bug only applied when "Tabs on top" was enabled.
This is a duplicate of bug 588764 (or what ever bug is split off per https://bugzilla.mozilla.org/show_bug.cgi?id=588764#c49 ) Note that in more recent builds, this is much better and just needs the border fixed.