I think they're related to this blog post: https://blog.mozilla.org/performance/2021/07/13/bringing-you-a-snappier-firefox/ https://blog.mozilla.org/performance

I think they're related to this blog post: https://blog.mozilla.org/performance/2021/07/13/bringing-you-a-snappier-firefox/ https://blog.mozilla.org/performance/2021/07/13/bringing-you... See also this bugzilla entry: https://bugzilla.mozilla.org/show_bug.cgi?id=1675614 https://bugzilla.mozilla.org/show_bug.cgi?id=1675614