485423 - HTML title attributes break drop down menus

Status: RESOLVED DUPLICATE of bug 443178

(Core :: Layout, defect)

Description

[Oscar Godson]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.7) Gecko/2009021906 Firefox/3.0.7
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.7) Gecko/2009021906 Firefox/3.0.7

I have included a link, but this will happen for every drop down I have ever seen. I tried looking for this on bugzilla but can't find it...

If the drop has an anchor with a title attribute (all WordPress blogs for example) it will break the drop down if you leave your mouse cursor on the navigation and the title pops up in the default Firefox tooltip. 

This is not the case in WebKit based browsers. It seems like Firefox is changing the CSS of a page or losing it's x,y coordinates when the tooltip pops up and you move your mouse.

Reproducible: Always

Steps to Reproduce:
1. Go the link provided
2. Highlight a fly out menu (e.g. Layouts > Fixed 1)
3. Wait for Firefox to pop up the default tool tip (if using the above example should say "cross browser fixed layout")
4. Try to move your mouse down to the next option.
Actual Results:  
The drop down will close and you will have to redo steps 1-2 before step 3 or else the drop down will close.

Expected Results:  
Should work like all other browsers and not close the drop down allowing you to choose a different option

Comment 1

[Ria Klaassen (not reading all bugmail)]

This is really hard to reproduce (with Firefox 3 on Windows XP). I only saw it once on twice but I'm even not sure.
So can you check if the bug is still in the latest build?
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-central/

Comment 2

[Oscar Godson]

Yes, this reproduceable on a few Macs I have. On Windows XP, yes, you are correct this does NOT happen. I only have 10.5.x Macs, but on all of them I can reproduce it.

I checked Minefield 3.6a and it does the same thing repeatedly on both of my test cases. 

This also happens with Firefox's tabs. If you hover a tab and then move the cursor the tab's opacity will flicker.