Closed Bug 1260645 Opened 8 years ago Closed 8 years ago

First calculation of css transition causes flashing on img [if hardware acceleration is enabled]

Categories

(Core :: Web Painting, defect)

Product:
Core
Component:
Web Painting
Version:
45 Branch
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1225934

People

(Reporter: firefoxbugtracker, Unassigned)

Details

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20160315153207

Steps to reproduce:

The height of an img is calculated with css and differs from original img height (height:auto).
Hover over img starts a css opacity transition.
Hardware acceleration is on.


Actual results:

The image is flashing, but only first time the transition is calculated.
After a hard reload (override cache) the flashing appears again.


Expected results:

Image shouldn't be flashing

Here is a working example of the problem:
https://codepen.io/thedyingmountain/pen/dMzGBy

The bug appears only if hardware acceleration is enabled.
I think this is fixed by bug 1225934. I can reproduce on 45, but not on 46 beta.
I'm going to go ahead and mark this a duplicate. If it's not then please re-open.
Status: UNCONFIRMED → RESOLVED
Closed: 8 years ago
Resolution: --- → DUPLICATE
Component: Layout: View Rendering → Layout: Web Painting
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