1484412 - Part of text on the boundaries of slide do not paint until you select the text

Status: RESOLVED DUPLICATE of bug 1468728

(Core :: Web Painting, defect)

Description

[Mayank Bansal]

Attachment: bug.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0
Build ID: 20180817220110

Steps to reproduce:

Go to https://slidewiki.org/presentation/584-14/semantic-data-web-lecture/2038-5/15160-2/#/slide-15166-4

Press the forward arrow a couple of times to move the slides forward


Actual results:

Sometimes, parts of text near the edges do not draw. 
This might take some trial to reproduce


Expected results:

not so

Comment 1

[Mayank Bansal]

Attachment: aboutsupport.txt

Comment 2

[Mark]

I ran mozregression-gui.

2017-12-14 Last Good day
2017-12-15 First Bad day

The tail of the Log has:

> Bug 1416991 - Fix perspective indexing in partial DL builds - r=mattwoodrow
> 
> Perspective item indices (used to produce unique per-frame keys) were generated
> by incrementing a counter in the builder when building a perspective display
> item. This caused problems with retained display lists, because an unmodified
> perspective could be skipped during a partial build, causing other perspectives
> to be incorrectly numbered and then incorrectly merged with the previous
> retained display list.
> 
> To fix this, we need to always increment the counter if there is likely to be
> a perspective, before that item may be skipped.
> 
> MozReview-Commit-ID: Edn7lUOLuPw
> 
> 2018-08-18T00:28:43: DEBUG : Did not find a branch, checking all integration branches
> 2018-08-18T00:28:43: INFO : The bisection is done.
> 2018-08-18T00:28:43: INFO : Stopped


Bisection informations window contained:

> app_name: firefox
> build_date: 2017-12-15 00:20:49.556000
> build_file: C:\Users\Mark\.mozilla\mozregression\persist\d5da77c14481--autoland--target.zip
> build_type: inbound
> build_url: https://queue.taskcluster.net/v1/task/BsUsZ8f1SF-TNQyys9YM_A/runs/0/artifacts/public%2Fbuild%2Ftarget.zip
> changeset: d5da77c1448183b938e263421b7ea4f679b8a944
> pushlog_url: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=89f8f948c2d1a582b82384543f24e9a69a051617&tochange=d5da77c1448183b938e263421b7ea4f679b8a944
> repo_name: autoland
> repo_url: https://hg.mozilla.org/integration/autoland
> task_id: BsUsZ8f1SF-TNQyys9YM_A

Uploading full regression log as mozregressions_Bug_1484412.txt

Comment 3

[Mark]

Attachment: mozregressions log for Bug 1484412