On Mar 3, 2020, at 12:44 AM, Noam Rosenthal <noam@webkit.org> wrote:



On Tue, Mar 3, 2020 at 10:36 AM Ryosuke Niwa <rniwa@webkit.org> wrote:

By the way, do you know what the status / interests at Mozilla? Given WebKit's painting / navigation behavior / implementation is still pretty close to Blink, it would be a good idea to reach out to Mozilla to make sure whatever in the spec is something they can also implement.

Mozilla have a bug open on this: https://bugzilla.mozilla.org/show_bug.cgi?id=1518999, but unfortunately it is not prioritized.
Since they're mainly a desktop browser web developers currently don't prioritize them for a performance metric. I hope that changes.

This explains a lot about the performance of desktop websites…

(Though in fairness, many mobile sites are not so great either).