fix root element of IntersectionObserver #12735
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
was previously using the <ScrollableList element, rather than the browser viewport, meaning
• hideIfNotIntersecting was never called
• when going <Back from a status update to a list view (e.g. home timeline), handleIntersection was called on ALL statuses (however many of them) at once, since they were all intersecting with the <ScrollableList element (rather than just the few in the browser viewport)