This site appears to use a scroll-linked positioning effect. This may not work well with asynchronous panning; see https://firefox-source-docs.mozilla.org/performance/scroll-linked_effects.html for further details and to join the discussion on related tools and features!
Asmel-a yettban dakken iseqdac asemdu n useflu scroll-linked. Aya yezmer ur itteddu ara akken iwata ɣef ugalis aramtawan; walihttps://firefox-source-docs.mozilla.org/performance/scroll-linked_effects.html i wugar n telqayt, akked tmerna ɣer usqerdec i icudden ɣer yifecka d tmahilin!