User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b7) Gecko/20100101 Firefox/4.0b7 Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b7) Gecko/20100101 Firefox/4.0b7 The white part of download manager starts 21 px too high and covers part of the upper border (It annoys the **** out of me). Reproducible: Always Steps to Reproduce: 1.Start Firefox 4 (beta 7) 2.Press Ctrl + J Actual Results: I see the "white bug" Expected Results: I shouldn't see the "white bug" It doesn't seems like it's a problem with chrome://mozapps/content/downloads/downloads.xul. I think it's the windows web frame that is programmed to start too high.