[Webkit-unassigned] [Bug 223970] New: Dogslow scrolling on Twitter with any Epiphany window

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=223970

            Bug ID: 223970
           Summary: Dogslow scrolling on Twitter with any Epiphany window
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: nekohayo at gmail.com
                CC: bugs-noreply at webkitgtk.org

On my Fedora 33 laptop with Intel Sandybridge graphics, under Xorg/X11 (didn't test Wayland) and Epiphany 3.38.x (with WebKitGTK 2.30.5), opening https://twitter.com/aperezdc in any epiphany window* and scrolling with either the touchpad or the mousewheel, it is extremely slow, as in, roughly 2 to 3 frames per second. Yet I don't think Adrián's tweets are that heavy.

I'd try with Epiphany tech preview as well, but currently it is utternly broken and unable to load any pages (I get "(epiphany:2): epiphany-WARNING **: 20:32:31.926: Web process crashed" spammed in the terminal when running it)

*: it happens in any regular epiphany window (no need for app mode), including a regular private window. For testing's sake, it's easier / more standardized for me to just use a private navigation window for this.

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