User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:2.0b1) Gecko/20100628 Firefox/4.0b1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:2.0b1) Gecko/20100628 Firefox/4.0b1 When opening a new tab in the first opened window, then switching to another webpage, the tab's title doesn't update. Switching to another tab or opening a new tab fix the issue. Also it may sometimes finally update after some seconds. That seems to happen only when the tab is in the first window. The issue happened while opening new tab and switching to another location using dynamic bookmarks, since this happens sometimes but not always, I haven't tried to reproduce this by another way. Reproducible: Sometimes Steps to Reproduce: 1.Open http://xkcd.com/760/ in a new tab 2.Then go to http://questionablecontent.net/view.php?comic=1698 3.The tab's title update may fail Actual Results: See the screenshot Expected Results: Update the tab's title correctly
Can you please disable the Personas and try again with the default theme? Also please disable all extensions if the first step doesn't help.
No, I can't : this is 4.0b1 and Personas extension is disabled. Also I can't chose the default theme, it's marked as "incompatible with Firefox 4.0b1". I remember seeing this kind of bug somewhere here.
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:2.0b2pre) Gecko/20100630 Minefield/4.0b2pre This works fine for me, tested with a new profile.
It only happens sometimes.
So, at least I can switch back to default theme, and the issue doesn't occur anymore, even while using Persona.