message: reset dropdown tag
diff: @@ -185,6 +185,7 @@ function SearchFilterCtrl(
  };
  vm.filter = function() {
  + vm.selectedTag = undefined;
  filteredItems = [];
  let filterValue = (vm.search.query) ? vm.search.query.toLowerCase() : '';
  filterValue = filterValue.replace(/\s+and\s+/, ' ');
  