591379 - Black Tab Thumbnail previews

Status: VERIFIED FIXED

(Firefox for Android Graveyard :: General, defect)

Description

[Tony Chung [:tchung]]

Attachment: Black tab thumbnails

Dupe me if already known.  Not all sites, but there are still a lot of pages that load properly, but still display the thumbnails in the tab sidebar as black.  

See screenshot.  Applies to both Android and Maemo builds

Repro:
1) install android and maemo nightlies:  
- Mozilla/5.0 (Android; Linux armv7l; rv:2.0b5pre) Gecko/20100826 Namoroka/4.0b5pre Fennec/2.0a1pre
- Mozilla/5.0 (X11; U; Linux armv7l; en-US; rv:2.0b4pre) Gecko/20100826 Namoroka/4.04pre Fennec/2.0a1pre
2) Open a few tabs and visit a few urls.  check that they are full loaded
3) scroll over to tab view pane, and verify some of them preview black thumbnails.

Expected:
- no black thumbnails if the page has loaded content

Actual:
- black thumbnails

Comment 1

[Matt Brubeck (:mbrubeck)]

I'm having trouble reproducing this now, but in the past I have seen it along with an error in the console from asyncDrawXULElement in browser.js (rendererFactory).

Comment 2

[Brad Lassey [:blassey] (use needinfo?)]

I believe that we will be switching to -moz-element for thumbnails in the near future which will change the code that handles this significantly and should be more robust.

can someone from the FE team confirm that?

Comment 3

[Benjamin Stover (:stechz)]

It will will be -moz-element or drawWindow (which will leverage layers as well, see bug 590525).  -moz-element probably doesn't work right now, and it isn't a target for b1 from what I understand from Chris Jones.

Comment 4

[Ayan Shah[:ashah]]

Build: Mozilla/5.0 (Android; Linux armv7l; rv:2.0b5pre) Gecko/20100826
Namoroka/4.0b5pre Fennec/2.0a1pre

Here is something I experienced:

I opened yahoo.com in a tab. I opened a new tab. I opened yahoo.com again in a new tab and opened the tab side bar as soon as the page started loading. After the webpage was loaded, I could see that half the tab thumbnail was white and half was the webpage view. So fwiw, tony mentioned in comment#1 about black thumbnail whereas I saw half white and half webpage. 
So, is my case a part of this same functional bug or is this something different than what this bug is for?

Comment 5

[Mark Finkle (:mfinkle) (use needinfo?)]

Seems to be fixed for me. After opening 10 tabs, no black thumbnails.

fixed by bug 576192

Comment 6

[Aakash Desai [:aakashd]]

verified FIXED on builds:

Mozilla/5.0 (Maemo; Linux armv71; rv:2.0b6pre) Gecko/20100916 Namoroka/4.0b7pre Fennec/2.0b1pre

and

Mozilla/5.0 (Android; Linux armv71; Nokia N900; en-US; rv:2.0b6pre) Gecko/20100916 Namoroka/4.0b7pre Fennec/2.0b1pre