message: apparently room can be null here
diff: @@ -82,7 +82,7 @@ module.exports = React.createClass({
  },
  onRoomTimeline: function(event, room) {
  - if (room.roomId === this.props.room.roomId) {
  + if (room && room.roomId === this.props.room.roomId) {
  const userId = event.getSender();
  // remove user from usersTyping
  const usersTyping = this.state.usersTyping.filter((m) => m.userId !== userId);
  