Patch Changes
- #1236
7ae32b5- Stop the default scroll-adjustment heuristic from drifting the viewport when a viewport-spanning item grows. Previously any item whose top sat above the fold (itemStart < scrollOffset) had its size delta compensated on every re-measure — including a streaming chat message that spans the fold and grows at its bottom, draggingscrollTopdownward token by token (#1218). Re-measurements now only compensate items that are entirely above the fold (itemStart + itemSize <= scrollOffset); growth below the anchor point leaves the scroll position untouched. First measurements (estimate→actual) still compensate any above-fold item, and a customshouldAdjustScrollPositionOnItemSizeChangestill overrides the default.