[Webkit-unassigned] [Bug 252545] New: Constant high idle CPU usage in front of any logged in page on Trello.com

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=252545

            Bug ID: 252545
           Summary: Constant high idle CPU usage in front of any logged in
                    page on Trello.com
           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: nekohayo at gmail.com
                CC: bugs-noreply at webkitgtk.org

Created attachment 465074

  --> https://bugs.webkit.org/attachment.cgi?id=465074&action=review

sysprof capture

When logged into trello.com (with my Google account for auth), on any internal page (ex: the dashboard of your boards, or an individual board), Epiphany (whether version 43.x or nightly) eats the CPU, which is particularly apparent on older hardware like a ThinkPad X220 with Intel Sandybridge graphics (in that case it eats 15-40% of the CPU, and since it keeps waking it up, that means it stays hot and the fan is audible as long as the page is open in Epiphany).

This happens in both normal browser mode and web app mode. Since it makes my CPU burn, it pretty much makes the app mode useless as I can't keep this companion web app running on the side.

It doesn't seem to occur when only visiting the trello.com homepage when not logged in (via a private browser window for example).

Attached is a sysprof capture with the nightly flatpak version on Fedora 37.

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