User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; pl; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; pl; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1 SWF films (Firefox, IE and Opera) you can see here: http://www.konto-testowe.cba.pl/firefox/index.html. Menu on-line: http://www.konto-testowe.cba.pl/firefox/menu/index.php. Please try a few times cause sometimes it works. Reproducible: Sometimes Steps to Reproduce: Do the same as in swf files. Actual Results: Menu hides. Expected Results: Look what happens in IE and Opera. In Firefox it should be like that too.

Confirmed on Windows Vista. Works: 2007092019 Fails: 2007092020 Regression range: http://bonsai.mozilla.org/cvsquery.cgi?module=PhoenixTinderbox&date=explicit&mindate=2007-09-20+18%3A00&maxdate=2007-09-20+21%3A00 seems to be caused by Bug 396099. Looks similar to Bug 436527.

It's hard to block on this without a testcase; in fact, it probably shouldn't have been confirmed without a testcase.

testcase1 from bug description, some kind of reduced. More reduction seems to reduce repeatability. STR: - Move mouse over "Features", menue opens below - Move mouse over menue: Sometimes menue disapears If you don't see this, reload (F5 or ctr+F5) one or more times.

So.... I can't seem to reproduce this. Anything to help that would be lovely.

- move mouse over "Features", menue opens - move mouse over the menue, sometimes menue disappears. If not, - move mouse out and repeat the steps above up to 10x If you dont see the bug, reload (F5) and repeat This certainly reproduces the bug for me.

http://www.diskeysign.com/ from the duplicate uses the same scripts "mootools.js" and "template.js" It shows the bug nicely: - move mouse over "Interiour Sings", menue opens below - move mouse (fastly) down beyond "Metal Frame Signs" menue disappears

See http://mootools.net/

Is it possible that this is a performance issue? I was unable to reproduce the bug in the posted testcase, but I was able to reproduce it on the posted site (http://www.diskeysign.com/) when my cpu usage was near 99%.

Can anyone reproduce this still. The testcases here all WFM.

> Can anyone reproduce this still. The testcases here all WFM. Mozilla/5.0 (Windows NT 5.1; rv:10.0) Gecko/20100101 Firefox/10.0 Can't reproduce with attachment 342802 [details] and STR of comment 8 on the same machine as in 2008. -> WFM