title: React Native: Optimized SectionList does not rerender after scrollToLocation
body: <p>I built an alphabet scrubber that scrolls a SectionList. The SectionList is optimized through the use of getItemLayout. If I scrub over the alphabet, the scrolling happens as planned, but the SectionList does not rerender until I release my finger from the screen.</p>
  
  <p><a href="https://snack.expo.io/@gersomvg/alphabet-scrubber-(snack)" rel="noreferrer">See this expo snack</a></p>
  
  <p>Anyone ideas on how to solve this?</p>
  
  <p><a href="https://i.stack.imgur.com/wLrUql.png" rel="noreferrer"><img src="https://i.stack.imgur.com/wLrUql.png" alt="Screenshot of example"></a></p>