Data from the on-screen overlay showed SCROLLABLE=YES but scrollTop=84/0 and atBottom=false: the initial pin happened before rows finished measuring, then a measurement reflow fired onScroll with the stale (top) scrollTop, flipping atBottom=false and disabling re-pinning, so the list never reached the bottom. Fix: a ResizeObserver re-pins to the true bottom as the content measures/grows; a programmatic-scroll guard makes onScroll ignore the scrolls we cause (so measurement reflows no longer flip the stick intent); overflow-anchor:none so the browser doesn't fight us; reveal waits for the height to settle. Overlay kept for one more verification pass.
byGalax
bdc017e609