980825 - CSS 3D transforms broken (regression) in FF 28

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[ondra zara]

Attachment: The test case html

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:28.0) Gecko/20100101 Firefox/28.0 (Beta/Release)
Build ID: 20140226081007

Steps to reproduce:

Open the sample page at http://bespin.cz/~ondras/ff_bug/.

The problem manifests when the #problem div has a non-zero rotateX transform. Try changing the angle via Firebug to see strange things happening.


Actual results:

Incorrect results in Firefox 28: http://bespin.cz/~ondras/ff_bug/ff28-bad.png (happens for angles >0)


Expected results:

Correct results in Firefox 27: http://bespin.cz/~ondras/ff_bug/ff27-good.png (was normally working before, as well as in other browsers)

Comment 1

[Liz Henry (:lizzard) (relman/hg->git project)]

Hi ondra, thanks for reporting this!

I tried to reproduce it by changing the rotateX angle in the #problem div, in the Web Developer Tools on a Mac and on Windows 8.1. I tried a few non-zero numbers but the boxes didn't turn into elongated rectangles the way they did in your "bad" example.  

I may be missing something, or it may be Linux-specific, or this might have something to do with addons or extensions. Does this still happen in Safe mode?

Comment 2

[Liz Henry (:lizzard) (relman/hg->git project)]

Matt, I'm cc-ing you because it you look like an expert on this sort of thing in past bugs :)

Comment 3

[Matt Woodrow (:mattwoodrow)]

Yep, I'll probably take this.

Will wait on getting a regression window and STR.

Comment 4

[ondra zara]

Hi,

my Firefox 28 got an update (Ubuntu package) approx. 2 days ago - the problem seems to be solved after updating (package: 28.0+build2-0ubuntu1). I am now unable to reproduce the bug caused by the older Firefox 28 package.

Comment 5

[Liz Henry (:lizzard) (relman/hg->git project)]

Ondra, OK, I'll close the bug for now. If it re-occurs please reopen this! Thanks.

Comment 6

[Joshua Mitchell (Inactive)]

Issue is resolved - clearing old keywords - qa-wanted clean-up