Bug 168831 - Repaints on scrollers with background gradient every frame
Summary: Repaints on scrollers with background gradient every frame
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: Safari Technology Preview
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2017-02-24 09:18 PST by Surma
Modified: 2017-02-26 17:04 PST (History)
4 users (show)

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Description Surma 2017-02-24 09:18:59 PST 
Reproduction steps:
1.) Open http://output.jsbin.com/waxuyo/quiet
2.) Enable repaint flashing
3.) Scroll the bottom scroller with a background gradients

It repaints on scroll on both LoDPI and HiDPI devices.

Safari TP 10.2 Release 23 had it fixed, Release 24 repaints again.
Comment 1 Simon Fraser (smfr) 2017-02-24 09:30:02 PST 
I suspect the "fix" was actually a regression, but will verify.
Comment 2 Radar WebKit Bug Importer 2017-02-26 17:04:50 PST 
<rdar://problem/30725468>