1241058 - [e10s] semitransparent nodes in markup-view (Inspector) show up with green artifacts when HWA disabled

Status: RESOLVED FIXED

(Core :: General, defect)

Description

[arni2033]

Attachment: screenshot 1 - [e10s] nodes in markup-view with green artifacts.png

>>>   My Info:   Win7_64, Nightly 46, 32bit, ID 20160118030338
STR:
1. Disable hardware acceleration (HWA), enable multiprocess mode, restart the browser
2. Open the following "data:" url or URL above. Attach it as .html if you want
> data:text/html,<body><script>var str=""; for(i=0;i<99;i++)document.write('<script class="firstClassName secondClassName thirdClassName">do_nothing;<\/script>')</script>
3. Open Devtools -> Inspector (make sure that vertical scrollbar is displayed in the markup)
4. Hover mouse over the scrollbar (don't move mouse after this step!)
5. Scroll down several lines
6. Hover mouse over the new lines

AR: New lines that appeared after Step 5 have some green artifacts. After Step 6 artifacts disappear
ER: No green artifacts. Nodes in markup view should render in a normal way after Step 5

This was caused by bug 1220629. Regression range
> https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=36c1e4eb0c9141aae4071a917ce4e3a59f5a79c6&tochange=d74084d072f0b5dfb00e3fbc103bef0a3fecbf85
This is most likely not connected to the Inspector itself; I think it's an issue with rendering elements on page which are invisible in the viewport. In this case, a "normal" testcase should be possible.

Comment 1

[Bas Schouten (:bas.schouten)]

I can reproduce this.

Comment 2

[Bas Schouten (:bas.schouten)]

Attachment: MozReview Request: Bug 1241058: Assure several operations properly operate on the current group target. r=jrmuizel

Review commit: https://reviewboard.mozilla.org/r/31635/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/31635/

Comment 3

[Jeff Muizelaar [:jrmuizel]]

Comment on attachment 8709994 [details]
MozReview Request: Bug 1241058: Assure several operations properly operate on the current group target. r=jrmuizel

https://reviewboard.mozilla.org/r/31635/#review28335

Comment 4

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

Jeff, can we get HWA disabled by not flipping prefs? i.e. would users who don't go mucking with things see that?

Comment 5

[Bas Schouten (:bas.schouten)]

(In reply to Brad Lassey [:blassey] (use needinfo?) from comment #4)
> Jeff, can we get HWA disabled by not flipping prefs? i.e. would users who
> don't go mucking with things see that?

Absolutely. Through blacklisting.

Comment 6

[Pulsebot]

https://hg.mozilla.org/integration/mozilla-inbound/rev/6e0578b8d2b6

Comment 7

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/6e0578b8d2b6

Comment 8

[Firefox Bug Husbandry Bot]

Moving from Core::Untriaged to Core::General https://bugzilla.mozilla.org/show_bug.cgi?id=1407598