[Webkit-unassigned] [Bug 252545] [GTK] 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

--- Comment #6 from Jeff Fortin <nekohayo at gmail.com> ---
Some more data points I forgot to mention:

* Neither Firefox nor Chromium are affected in the same way, they keep the CPU usage low as far as I can see (like maybe 4-7% for the browser, nothing out of the ordinary when idle, and the GNOME Shell process can retain its low/near-zero CPU usage then)

* When this issue happens, it does not "just" affect Epiphany, it slows down the rest of the desktop experience too. So if I want a fluid Wayland GNOME Shell I need to not keep Epiphany opened on that website.

* This does not happen if the window is minimized/hidden (Super+H with GNOME Shell)

Apparently the constant requestAnimationFrame events are making it redraw and  submit buffers for gnome-shell to recomposite constantly, even though it doesn't seem to have any actual layout or paint requests?

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