439316 - Layout of Flash objects changes if a content policy is installed

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Wladimir Palant]

Attachment: Minimal content policy for testing

This was reported as an Adblock Plus bug (https://www.mozdev.org/bugs/show_bug.cgi?id=19283), it occurs with any JavaScript content policy however. On http://bowlevt.com/index_.php, there are two Flash objects next to each other horizontally. If a JavaScript content policy is installed, the same Flash objects are stacked vertically.

I see this behavior in Minefield/3.0pre build 2008061008 on Windows XP, the issue was reported for Firefox 3 RC3 on Mac. Firefox 2.0.0.14 is fine however.

Minimal content policy is attached - put it into Firefox' components directory, create a file .autoreg in your profile and restart Firefox. This will make the issue occur without installing an extension like Adblock Plus or NoScript.

Comment 1

[Ria Klaassen (not reading all bugmail)]

Regression range is
http://bonsai.mozilla.org/cvsquery.cgi?module=PhoenixTinderbox&date=explicit&mindate=1210109640&maxdate=1210116359

Comment 2

[Wladimir Palant]

I don't see how the patches in bug 432275 could have caused this, which means bug 429442 then.

Comment 3

[Wladimir Palant]

Either the testcase changed or the bug has been fixed elsewhere - I can no longer reproduce, even with Firefox 3.0.17. Let's resolve as WORKSFORME then.