For example move over "Solutions" then the menu-items will appear. If you move down the whole list flickers. This works fine in Opera, MSIE and also in Netscape 6.1 - so must be somehow regressed since then. Using build 2001092503

same for me on W2k 0.9.4+ (2001092308) May have appeared before.

Appears to have regressed some time between 07-25 and 09-17 - needs more narrowing, obviously.

another terrible looking example is http://www.gebr-weiss.com/ try for example "produkte" it's flickering heavily.

http://www.nextra.com seems to only flicker when I move the mouse cursor as fast as I can (without leaving the menu). http://www.gebr-weiss.com/ on the other hand is causing flicker on each link on the menu. build 2001102903 win32 I think this is caused by the way mozilla reflows. Markus: think you could create a very simple testcase?

http://www.factiva.com/ [just move over "products", ....] would be another example.

build 2001120603 win32 oddly I don't see any flickering in this build with the 3 URLs

maybe I was testing it wrong..... I don't see this problem all the time, just sometimes when I hover on the menus real fast, and even then I'm not sure if I've left the menu and come back. It might help to know when a onmouseover onmouseout event happens...

matic: could you create a really big menu for testing :-) ?

Created a (big quite big) testcase :-) at http://www.world-direct.com/mozilla-testcases/101698/nextra.htm

ok this is not a mozilla bug but a mozilla feature. The flickering occurs because a mouseout on the DIV is being caused by mouseout events bubbling from the elements in the DIV. I'll attach a testcase

the testcase is a "menu" of sorts. when you select disable bubbling the table in the DIV captures all mouseout events and stops it from propagating to the DIV. note that further optimisation can be done for onmouseover now the curious thing is that it is not seen in NS6.1 matic: could you try my testcase in NS6.1?

Here are the results on my P2-350, win98 - with bubbling enabled: flickering with 2001120703, ns 6.2.1 no flickering with k-meleon 0.6 - with bubbling disabled: no flickering on 2001120703, ns 6.2.1, k-meleon 0.6

The last testcase flickers a lot for me with w98 P2 at 350 MHz, Mozilla build 2001120603, and 0.9.6 IF bubbling is enabled. If I select to disable it then no flicker happens. Testing with K-meleon 0.6 then no flicker happens no matter if bubbling is enabled or not.

WFM on Linux build id 2001120708 Athlon 1333 and Linux build id 2001120703 Duron 700, but i confirm on Win98 build id 2001120703 on the duron, latest Basic testcase with bubble enabled, makes moz to flicker like mad on windows.

WFM on Mac OS 9 build id: 2001120604 PowerPC 233 No flicker produced with either bubbling enabled or disabled, moving the mouse really fast :), produces the same effect.

In the testcase from: ------- Additional Comment #13 From _basic@yahoo.com 2001-12-08 10:54 ------- Created an attachment (id=60943) better testcase with enable/disable bubbling I can easily reproduce the flickering using the build from 2001121003 on win98, with bubbling enabled. When I ran the mouse over the links the flickering was quite apparent, running the mouse along the side border did not cause the flicker. Turning the disabling the bubbling caused the flickering to stop.

Any news on this one?

Moving to Moz1.1. nsbeta1-. Engineers are overloaded with higher priority bugs.

It sounds like this bug is really "onmouseout events bubble when they probably shouldn't", which would be a DOM issue ... Fabian, care to comment?

http://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html#Events-MouseEvent mouseout The mouseout event occurs when the pointing device is moved away from an element. This event is valid for most elements.. * Bubbles: Yes * Cancelable: Yes that's all I can say... If the bubbling is the _only_ cause of the flickering, then this bug is probably invalid... The fact that it is a regression makes it sound like there is another cause to this bug than the bubbling, though. Or perhaps bubbling has been fixed since 6.1 (in which case it's an evangelism bug). If someone could send a mail to joki about this, it would probably help.

joki: what's your view on that?

The flickering is causing a very visible annoyance. If a fix isn't to difficult than this would be highly appreciated.

the flicker on http://www.factiva.com/ is fixed by the patch in bug 163528

I can not reproduce the flicker on http://www.gebr-weiss.com/ using a cvs trunk build from this morning on WINXP

Taking.

Resolving as fixed since I do not see the flicker on http://www.factiva.com/ now that my patch for bug 163528 has been checked in. I could not reproduce the flicker on the other URL's listed in this bug.