This release features a number of performance and quality of life improvements for the lazy loader. Keep reading if you're interested in the technical details. Also, Facebook, Twitter (now X), and YouTube have been updated with minor changes.
Perf: when browsing to a specific post (e.g. last post of a thread, or first unread post), browsers generally display the top of the page while it's loading, then once it has loaded enough assets (after a second or so), it scrolls down to the target. Recent versions of the lazy loader would ignore embeds at the top of the page until the browser scrolled to the target post, then it would load embeds normally. Starting with this version, the lazy loader will proactively look up what embeds are expected to appear after the browser scrolls to the correct post to load them up as soon as possible. This is expected to slightly shorten the time it takes to display the target post fully if that post contains an embed. If that embed is of dynamically-sized (e.g. a tweet or Facebook post) it may decrease the Content Layout Shift score as well.
Perf/QoL: when clicking on the attribution link of a quote, XenForo scrolls to that post. The lazy loader now proactively loads embeds in that post instead of waiting for the the scrolling to complete. In addition, even if the browser is scrolling up to that post, dynamically-sized embeds such as tweets will expand towards the bottom. Previously, they would expand towards the top, which is the desired behaviour when manually scrolling up but is an annoyance when automatically scrolling to a target.
QoL: after clicking the "back to top" icon, dynamically-sized embeds expand towards the bottom as in the aforementioned situation.