Closed Bug 1432961 Opened 6 years ago Closed 6 years ago

Use of backface-visibility:hidden on LinkedIn's feed page makes animations noticeably choppier on slower hardware

Categories

(Core :: Web Painting, defect, P3)

Product:
Core
Component:
Web Painting
Type:
defect

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1186204
Tracking Flags:
Tracking Status
platform-rel --- ?
firefox60 --- affected

People

(Reporter: wisniewskit, Unassigned)

References

(
URL
)

Details

(Keywords: perf, Whiteboard: [platform-rel-Linkedin]) 

LinkedIn's current /feed page seems to animate its header bar noticeably more choppily for me on the Quantum reference hardware (and for others on 2015 MacBooks).

This is subtle, but seems related to them using backface-visibility:hidden, as when I use mitmproxy and rewrite their CSS without those rules, the page's animations seem smoother to me (subtle though the effect may be).

webcompat.com contributor hiikezoe offered that this may be related to bugs bug 1186204 or 779598, but it seems that the former was fixed a year ago, and I don't see LinkedIn's page using preserve-3d in its stylesheets.

Note that (as one would hope) it's also much smoother with gfx.webrender.all enabled on today's nightly build on the same reference hardware.
Keywords: perf
platform-rel: --- → ?
Whiteboard: [platform-rel-Linkedin]
[ Triage 2017/02/20: P3 ]
Priority: -- → P3
Component: Layout: View Rendering → Layout: Web Painting
Status: NEW → RESOLVED
Closed: 6 years ago
Resolution: --- → DUPLICATE
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