User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; cs; rv:220.127.116.11) Gecko/20090729 Firefox/3.5.2 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; cs; rv:18.104.22.168) Gecko/20090729 Firefox/3.5.2 Sometimes it just happens that I click on a tab and it detaches spontaneously into a new window. I can’t reproduce that, it happens just from time to time. I don’t know what might be the reason. Reproducible: Sometimes Steps to Reproduce: 1. Click on a tab. Actual Results: The tab detaches from the current window into a new one. Expected Results: It should not detach.