User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 To understand this clearly, pretend you have no use of a mouse/pointing device (not unusual for some users dealing with certain physical challenges). - Navigate to "http://www.mozilla.org/support" - Press the tab key on the keyboard about 14 times until "Online Documentation" has the focus - Press the Enter key on the keyboard to navigate to the page - Press Alt-Left on the keyboard to back-up a page - Notice that "Online Documentation" no longer has the focus - you will need to press tab on the keyboard about 14 times (again) to get "Online Documentation" to have the focus Try this exercise in another major browsers. Notice that the "Online Documentation" link retains the focus. For most users, this is not an issue. Mousing-at-will to links is the norm. However, to users wholly dependant on keyboard input, this is a very serious issue. It may not be clearly apparent in this example, but this difference makes FireFox very difficult to use for users not able to access a pointing device. Reproducible: Always Steps to Reproduce: 1.Navigate to "http://www.mozilla.org/support" 2.Press the tab key on the keyboard about 14 times until "Online Documentation" has the focus 3.Press the Enter key on the keyboard to navigate to the page 4. Press Alt-Left on the keyboard to back-up a page Actual Results: Notice that "Online Documentation" no longer has the focus - you will need to press tab on the keyboard about 14 times (again) to get "Online Documentation" to have the focus Expected Results: Still have "Online Documentation" in focus.

*** This bug has been marked as a duplicate of 36539 ***