Discovered today that Epiphany (and presumably any application using #WebKitGTK) will experience slow scrolling after resizing the webview (or window) on some websites, particularly when you drag the scrollbar using the mouse (instead of using the scrollwheel), as can be seen in the video below.
I have reported it here: https://bugs.webkit.org/show_bug.cgi?id=305290
Wondering if anyone experiences this on web pages other than this article: https://thewalrus.ca/return-to-office-mandates/
1