byGalax
b4ed3aced0
scrollToIndex raced the virtualizer's own layout effect and depended on size estimates, leaving the list pinned at the top on open (and flickering as it settled). Drive scrollTop = scrollHeight directly for the bottom case (order-independent, true bottom) and re-pin on measure; switch the scroll root from h-full to flex-1 min-h-0 so it always has a bounded, scrollable height.