494572 - clip-path: child elements bleed on dark background

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Tom Edwards]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1pre) Gecko/20090522 Shiretoko/3.5pre (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1pre) Gecko/20090522 Shiretoko/3.5pre (.NET CLR 3.5.30729)

This bug's URL contains a element with a valid clip-path applied, and a child element below it.

The child element bleeds a thin orange line from the diagonal line in the top-left corner. The amount of bleed increases when the background is dark (click anywhere on the page to cycle through different colours/images) but is always present.

The background image used to create the black border is at http://static.moddb.com/cutoff/images/default/bg_corner_rotator.png - as you can see, it isn't transparent in the affected area.

Reproducible: Always

Steps to Reproduce:
1. Add a clip-path to an element
2. Create a brightly-coloured child element
3. Place on a dark background
Actual Results:  
Child element bleeds colour under parent.

Expected Results:  
Child element does not bleed; edge obscured entirely by parent.

Comment 1

[Tom Edwards]

Attachment: Reference rendering of bug

Comment 2

[Tyler Downer [He/Him]]

Reporter, are you still seeing this issue with Firefox 3.6.13 or later in safe mode or a fresh profile? 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

Comment 3

[Tyler Downer [He/Him]]

This bug has had the CLOSEME tag for several weeks and the date in the tag is
far gone. If the reporter can still see this issue, Please retest with Firefox
3.6.x or later and a new profile
(http://support.mozilla.com/kb/Managing+profiles). Then please remove the
closeme tag in the whiteboard, mark the bug against the proper version and
comment on the bug.