Bug 247783

Summary:	Janky interaction with the page for large Google Colab notebooks
Product:	WebKit	Reporter:	Vladimir Prelovac <vprelovac>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	bfulgham, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	InRadar
Version:	Safari 16
Hardware:	Unspecified
OS:	Unspecified

Description Vladimir Prelovac 2022-11-11 00:20:09 PST

Load:

https://colab.research.google.com/drive/1qA_xbKQl8xZH_oqXwjywkI8spiD2vgE2

Try fast scrolling the page. It will be very janky and uncomfortable.

In general working with large Colabs is very slow.

On Firefox (and Chrome) it is sikly smooth.

Comment 1 Radar WebKit Bug Importer 2022-11-11 09:15:38 PST

<rdar://problem/102242844>

Comment 2 Simon Fraser (smfr) 2022-11-11 09:20:38 PST

Looks like layout thrash (triggered by getBoundingClientRect()) and some expensive layouts.

Page doesn't seem to be using content-visibility.