User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040621 Firefox/0.9.0+ Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040621 Firefox/0.9.0+ When viewing pages in single tab mode, the display is 1 pixel less than when viewed with multi tabs. Single tab display: http://www.capital-sb.com.my/image/FF0.9-1-exploded.gif Multi tab display: http://www.capital-sb.com.my/image/FF0.9-2-exploded.gif Tested also on 0.9 Milestone build. Reproducible: Always Steps to Reproduce: 1. Uncheck the following two options * Hide the tab bar when only one website is open * Select new tabs opened from links 2. Display any page with one tab only. Observe the tab height. 3. Clicking a link using middle-click you will see that the page in the first tab is shifted down by 1 pixel. Actual Results: When viewing pages in single tab mode, the display should not be shifted up by 1 pixel.

*** This bug has been marked as a duplicate of 246186 ***