How to solve one of the most frustrating UX issues in chat applications: ensuring automatic scrolling works correctly when images load asynchronously.
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Why useRef alone is insufficient for dynamic measurements, and how to combine it with ResizeObserver and useState for responsive UI.
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How the browser turns CSS changes into pixels - the five stages of the render pipeline, why some CSS properties trigger the full pipeline and others skip most of it, and how to avoid jank by understanding which path your changes take.
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