User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5 Both Firefox and Thunderbird exhibit the problem. * If the minimise button is pressed, the focus remains on the window, the taskbar entry will be depressed. * If the taskbar entry is pressed to achieve the same effect, there will be no focused window This is not how it works with pretty much any of the other software I have, including some Seamonkey build I have installed here. Reproducible: Always Steps to Reproduce: Expected Results: the focus should be returned to the previously used window.

Bug 300689 ?

Correct. Search didn't quite turn that up for me. Hopefully it gets fixed soon, it's really annoying. *** This bug has been marked as a duplicate of 300689 ***