433744 - Flash overlaps div position:fixed

Status: RESOLVED INVALID

(Core :: Layout, defect)

Description

[Mart Roosmaa]

User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9pre) Gecko/2008051423 Minefield/3.0pre
Build Identifier: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9pre) Gecko/2008051423 Minefield/3.0pre

In FF3, the flash rendering has been broken somehow, it no longer respects div's positioned as fixed. In FF2 everything works fine.

I'll attach a simple html page demonstrating the flaw. In FF3 flash overlaps the red bars at the top and bottom of the page.

Reproducible: Always

Steps to Reproduce:
1. Browse to a page using Flash and html elements using position:fixed.

Actual Results:  
Flash overlaps the html element using position:fixed

Expected Results:  
Html element should be rendered on top of flash.

I've tested this on multiple distributions and 2 computers, and it is still present in the CVS version. I haven't tested on Windows though.

Comment 1

[Mart Roosmaa]

Attachment: Testcase

Comment 2

[Nochum Sossonko [:Natch]]

confirmed using:

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9pre) Gecko/2008051506 Minefield/3.0pre

Suggest change OS-->All

BTW only the one w/o wmode overlaps the div the rest are fine.

Comment 3

[Ria Klaassen (not reading all bugmail)]

Regression window is: http://bonsai.mozilla.org/cvsquery.cgi?module=PhoenixTinderbox&date=explicit&mindate=2006-01-25+16%3A00&maxdate=2006-01-26+10%3A00
so probably caused by bug 317375.

Comment 4

[Robert O'Callahan (:roc) (email my personal email if necessary)]

This is just because position:fixed doesn't have a widget anymore. position:absolute always had this issue.

Comment 5

[Martijn Wargers (dead)]

See also bug 202628.

Comment 6

[Mats Palmgren (inactive)]

We're in the process of removing support for plugins (bug 1677160) and bug 1687239 has removed the relevant Layout code, so this bug is irrelevant now.