Bug 208178

Summary:

Element with position: sticky flickers when scrolling if layout is triggered

Product:

WebKit

Reporter:

p_stas1997

Component:

Scrolling

Assignee:

Nobody <webkit-unassigned>

Status:

NEW ---

Severity:

Major

CC:

simon.fraser, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

Safari 15

Hardware:

iPhone / iPad

OS:

iOS 15

Attachments:

Description	Flags
captured the moment of peeling off.	none

Description p_stas1997 2020-02-24 22:48:41 PST

Created attachment 391627 [details]
captured the moment of peeling off.

An element that has position:sticky starts peeling off for a split second when scrolling 
if the DOM is currently being modified and / or heavy operations are occurring in javascript.

Demo http://jsfiddle.net/elefante/uz5ka3c6/69/
Try to quickly scroll up and down and see this

Comment 1 Radar WebKit Bug Importer 2020-02-26 09:46:16 PST

<rdar://problem/59809008>