There's the scroll background jank due to their scroll snapping model (you can scroll below a full screen div which should be impossible), the various zIndex ja

There's the scroll background jank due to their scroll snapping model (you can scroll below a full screen div which should be impossible), the various zIndex jank, round corners for video, the SVG background issues (and SVG in general are buggy), the input autocomplete issues with their half-broken password manager... And that's all present on the latest iOS. Recently they also broke localStorage & indexDB which are core features of the web (sill broken on the latest stable)