GNOME Bugzilla – Bug 781997
Scrolling is not smooth on some websites
Last modified: 2017-05-01 00:44:37 UTC
I'm filing this here because I'm not sure if it really is a webkit performance issue or if it's actually an input events management issue... but if you use a touchpad that has smooth pixel-perfect scrolling, on some websites like planet gnome it will work flawlessly but on other websites like http://fortintam.com/ it will be noticeably non-smooth. Surprisingly, Firefox works fine on it.
Thanks for taking the time to report this. This issue is most likely a bug in WebKit. Please report the bug to https://bugs.webkit.org/ including a link to this bug report and noting the version of WebKitGTK+ that you have installed. When reporting the WebKit bug, be sure to include the prefix '[GTK]' in the bug summary and select the 'WebKit Gtk' component.