656948 - Setting opacity to 1 after having been between 0-1 causes background flashes on TR and TD elements

Status: RESOLVED WORKSFORME

(Core :: Web Painting, defect)

Description

[dead account - use gnarf37 at gmail]

User-Agent:       Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_7) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.30 Safari/534.30
Build Identifier: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

Setting opacity to 1 after having been between 0-1 causes background flashes on TR and TD elements.

It seems that the background is only rendered behind the text for a short period after setting opacity to 1.

This was originally reported as a jQuery bug here: 

http://bugs.jquery.com/ticket/9222

Reproducible: Always

Steps to Reproduce:
1. Open the fiddle link
2. Watch it bug out


Actual Results:  
The background color disappears from part of the table cell after its opacity has been set to 1

Expected Results:  
The background color doesn't disappear.

Comment 1

[Boris Zbarsky [:bzbarsky]]

I see this on trunk too.  roc, tn, any ideas?

Comment 2

[Timothy Nikkel (:tnikkel)]

Regressed with retained layers.

Comment 3

[Timothy Nikkel (:tnikkel)]

Attachment: reduced testcase

Comment 4

[(mostly gone) XtC4UaLL [:xtc4uall]]

Confirmed with
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0 ID:20131113153432 CSet: 04f4b34ae3ae ESR

WFM with
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 ID:20140421162246 CSet: 1c35a9dca8a0 ESR
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0 ID:20140512030202 CSet: 20ca234fd62b