NEW 220085
Scrolling is slow / janky on Tweetdeck (Twitter) with Epiphany web apps 
https://bugs.webkit.org/show_bug.cgi?id=220085
Summary Scrolling is slow / janky on Tweetdeck (Twitter) with Epiphany web apps
Jeff Fortin
Reported 2020-12-22 07:50:54 PST
Using gnome-web, visit tweetdeck.twitter.com, make a web app out of it, and log into it with your Twitter account. Add a bunch of columns (I have 15 of them) so that there is horizontal scrollability, and then scroll horizontally (ex: using two-finger horizontal scrolling on a touchpad, or shift-scroll). Result: jerky/janky/sluggish scrolling, whether you are on Intel graphics or open source radeon graphics. Tested on GNOME's Xorg session on Fedora 33. In comparison, Firefox is butter-smooth for the same usecase.
Attachments
sysprof screenshot on Wayland (216.57 KB, image/png)
2023-04-28 12:11 PDT, Jeff Fortin 		no flags
Details
sysprof capture file (1.43 MB, application/x-xz)
2023-04-28 12:12 PDT, Jeff Fortin 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Kdwk
Comment 1 2023-04-27 02:12:47 PDT
Can this be reproduced in Gnome Web 44.2/ WebKitGTK 2.40.1? I don't have Tweetdeck so can't test.
Jeff Fortin
Comment 2 2023-04-28 12:11:54 PDT
Created attachment 466126 [details] sysprof screenshot on Wayland Still happens with version 44.2 and WebKitGTK 2.40.1. It might be a bit less noticeable for me now on Wayland with triple buffering, but still noticeably less smooth, and a bit more jumpy, than Firefox.
Jeff Fortin
Comment 3 2023-04-28 12:12:21 PDT
Created attachment 466127 [details] sysprof capture file
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