PostHog/posthog-js posthog-js@1.386.4 on GitHub

1.386.4

#3767 fdc07f3 Thanks @arnohillen! - replay: jump scrolls instantly when seeking past pages that use scroll-behavior: smooth. During fast-forward the replayer applied scrolls with behavior: 'auto', which inherits the page's CSS scroll-behavior — so on sites that set scroll-behavior: smooth (e.g. Silk bottom sheets/modals) a seeked scroll animated from 0 instead of jumping, leaving scroll-revealed content (the open sheet) out of view and showing only the backdrop until the animation caught up. Sync scrolls now use behavior: 'instant', matching the method's stated intent that smooth scrolling be disabled while fast-forwarding. Full snapshot rebuilds apply their initial offset with behavior: 'instant' too, so the document-level scroll doesn't animate either.
(2026-06-11)