526859 - IFrames flash white before their content loads instead of being filled with background color

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Bill Wallace]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.4) Gecko/20091016 Firefox/3.5.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.4) Gecko/20091016 Firefox/3.5.4

If an iframe is included, with a style, or on a page where it would be expected to not be white, eg:
<iframe style="background: red" ...
of
<div style="background: red"><iframe ...
one would expect that the iframe would be filled with the background color until the page loads, but instead it flashes white. 
I've been testing this with programatic creation/addition of iframes - it may render correct on a first render. 

Reproducible: Always

Comment 1

[Bill Wallace]

Attachment: Test case demonstrating the flash

If you load this html file and hit refresh, you will sometimes (depending on latency) see a white flash until the page loads.  It should instead show red, and if the red weren't defined, then blue.

Comment 2

[Tyler Downer [He/Him]]

Reporter, are you still seeing this issue with Firefox 3.6.13 or later in safe mode? If not, please close. These links can help you in your testing.
http://support.mozilla.com/kb/Safe+Mode
http://support.mozilla.com/kb/Managing+profiles

You can also try to reproduce in Firefox 4 Beta 8 or later, there are many improvements in the new version, http://www.mozilla.com/en-US/firefox/all-beta.html

Comment 3

[Tyler Downer [He/Him]]

No reply, INCOMPLETE. Please retest with Firefox 3.6.13 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.