1891017 - Scroll-linked animation has started to lag and stutter, especially with touchpad kinetic scroll

Status: RESOLVED WORKSFORME

(Core :: CSS Transitions and Animations, defect)

Description

[Kestrel]

STR:

1. Visit https://www.albixon.com on Ubuntu 23.10 (Wayland).
2. Scroll the page with the touchpad.

Scrolling is delayed, lags behind and stutters instead of smoothly scrolling like before. It is much more noticeable using a touchpad with kinetic scroll compared with a mouse wheel.

If the window is too narrow, the scroll-linked animation is disabled and scrolling works normally.

Scrolling is smooth on Chromium.

Performance profile:
https://share.firefox.dev/3Q2dz1J

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=a325ddccae9b4381abab92bb365767cb0d052e8d&tochange=7fd3bd56943d8ee09efb1929911f2bfa93f1ef3f

Regressed by Bug 1864425.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

:emilio, since you are the author of the regressor, bug 1864425, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 2

[Emilio Cobos Álvarez (:emilio)]

I think this is a dupe of bug 1888748, but lmk if that's not the case.

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1864425

Comment 4

[Emilio Cobos Álvarez (:emilio)]

Can you check on latest nightly?

Comment 5

[Kestrel]

The website is no longer using a scroll-linked animation so it works regardless.