1435675 - Coursera login not displayed with webrender on Win 8.1 x64

Status: RESOLVED DUPLICATE of bug 1435143

(Core :: Graphics: WebRender, defect, P1)

Description

[Raghu R]

User Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0
Build ID: 20180204220351

Steps to reproduce:

Turn on Webrender in about:config 
Visit coursera.org and click log in.

https://i.imgur.com/xQttBD8.png



Actual results:

login form displayed but empty - fields aren't visible. Can still focus on them though 


Expected results:

form is displayed properly.

Comment 1

[Darkspirit]

Thank you! Confirmed in Nightly 60 x64 20180205100240 de_DE @ Debian Testing (KDE, Radeon RX480).
fresh profile: gfx.webrender.all

Comment 2

[Darkspirit]

Attachment: 2018-02-05_13-43-59.mp4

Comment 3

[Milan Sreckovic [:milan] (needinfo for best results)]

I can reproduce on Windows 10.

Comment 4

[Darkspirit]

try builds from bug 1434288:
> WR @ 87c6a6ba7e75d8ed0b2ddeeb5fa4e363482f7f86
> https://treeherder.mozilla.org/#/jobs?repo=try&revision=7801945b00e7eac75e8bdf9d64869a9c284599de
mozregression --repo try --launch 7801945b00e7eac75e8bdf9d64869a9c284599de --pref gfx.webrender.all:true startup.homepage_welcome_url:"https://www.coursera.org/?authMode=login"
-> good

> WR @ e772c3cb8ea0a35e6477e9dc8dd2144e2de87b56, with the fixes
> https://treeherder.mozilla.org/#/jobs?repo=try&revision=62ab4844535a8ae2194ee6b7e43c1f9f05bb1511
mozregression --repo try --launch 62ab4844535a8ae2194ee6b7e43c1f9f05bb1511 --pref gfx.webrender.all:true startup.homepage_welcome_url:"https://www.coursera.org/?authMode=login"
-> bad

Comment 5

[Darkspirit]

Fixed in the try build from bug 1435143 comment 7.