message: round scrollTop upwards to prevent never detecting bottom
diff: @@ -222,7 +222,10 @@ module.exports = React.createClass({
  // whether it will stay that way when the children update.
  isAtBottom: function() {
  const sn = this._getScrollNode();
  - return sn.scrollTop === sn.scrollHeight - sn.clientHeight;
  + // fractional values for scrollTop happen on certain browsers/platforms
  + // when scrolled all the way down. E.g. Chrome 72 on debian.
  + // so ceil everything upwards to make sure it aligns.
  + return Math.ceil(sn.scrollTop) === Math.ceil(sn.scrollHeight - sn.clientHeight);
  },
  // returns the vertical height in the given direction that can be removed from
  