Scrolling up in VariableSizeList causes major scroll jitters when using scrollToItem. about react-window HOT 2 OPEN

        {!heightsCalculated && (
          <ShadowHeightCalculator messages={localMessages} />
        )}

function ShadowHeightCalculator({
 messages,
}: {
 messages: Array<MyDataType>;
}) {
 return (
   <div style={{ position: "relative", opacity: 0, height: "1px" }}>
     {messages.map((message, idx) => (
       <ListItem
         key={`shadow-height-${idx}`}
         index={idx}
         style={{
           position: "absolute",
           left: 0,
           top: 0,
         }}
       />
     ))}
   </div>
 );
}

  const checkHeightsCalculated = (messages: Array<MyDataType>) => {
     const heightsCalculated = messages.some(
       (msg) =>
         rowHeights?.current &&
         typeof rowHeights.current[msg.hash ?? ""] !== "number"
     );

     return !heightsCalculated;
 };