795694 - Content not redrawn after reversing scrolling direction on "The Verge" homepage

Status: RESOLVED FIXED

(Core :: Layout, defect)

Description

[timbugzilla]

Attachment: PNG showing problem with content not redrawn when reverse scrolling

Since DLBI landed scrolling over top stories grid on The Verge's homepage then scrolling back to reveal them again shows regions where content has not been redrawn. 

See attachments for a picture of the problem, and how the page should look.

This was observed with the moz-central win32 PGO build built from the following change-set:

http://hg.mozilla.org/mozilla-central/rev/a680fd777c3b

Comment 1

[timbugzilla]

Attachment: PNG showing how the page should look

Comment 2

[Chris Jones [:cjones] inactive; ni?/f?/r? if you need me]

I saw this yesterday and thought it was the same issue as bug 795695, but it's not.

I can still reproduce on linux-x64/basic and win7/d3d10.

Comment 3

[Matt Woodrow (:mattwoodrow)]

Attachment: Check for visible region changes in layer trees

Comment 4

[Matt Woodrow (:mattwoodrow)]

https://hg.mozilla.org/mozilla-central/rev/281019df9343

Comment 5

[Simona Badau, Desktop QA]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0
Build ID: 20121205060959

Verified as fixed on the latest Nightly - the content is properly redrawn after reversing scrolling direction.

Comment 6

[Simona Badau, Desktop QA]

(In reply to Simona B [QA] from comment #5)
> Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0
> Build ID: 20121205060959
> 
> Verified as fixed on the latest Nightly - the content is properly redrawn
> after reversing scrolling direction.

Correction - Verified as fixed on the latest Firefox 18 beta 3.