[Webkit-unassigned] [Bug 256756] New: [GTK] The stutters are back

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=256756

            Bug ID: 256756
           Summary: [GTK] The stutters are back
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kdwkleung at protonmail.com
                CC: bugs-noreply at webkitgtk.org

Created attachment 466343

  --> https://bugs.webkit.org/attachment.cgi?id=466343&action=review

Screencast showing scrolling the same website in 2.40 VS 2.41

With WebKitGTK 2.40, the stutters while scrolling heavy websites are largely gone. Even when the website doesn't respond it can still be scrolled smoothly (the scrollbar will usually lag behind the actual scrolling). However, with WebKitGTK 2.41, the stutters are back and the scrolling lags exactly the same as the scrollbar. See attached video for comparison. The URL used is https://www.reddit.com/r/nottheonion/comments/13fm9jv/loch_ness_monster_hunter_i_thought_this_job_would/, but the Reddit post must be opened from the main feed in order to reproduce the bug (go to reddit.com/r/nottheonion, the find this post, click to open comments, and scroll down).

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