message: If a tag is unrecognised, assume manual ordering
  (as we did previously)
  Fixes
diff: @@ -176,12 +176,13 @@ class RoomListStore extends Store {
  listOrders[order].forEach((listKey) => {
  let comparator;
  switch (order) {
  - case "manual":
  - comparator = this._getManualComparator(listKey, optimisticRequest);
  - break;
  case "recent":
  comparator = this._recentsComparator;
  break;
  + case "manual":
  + default:
  + comparator = this._getManualComparator(listKey, optimisticRequest);
  + break;
  }
  lists[listKey].sort(comparator);
  });
  