Make setDomain changes affect MUC list modal

src/plugins/muc-views/modals/muc-list.js

@@ -111,6 +111,7 @@ export default class MUCListModal extends BaseModal {
     }
 
     onDomainChange () {
+        this.getElementsByClassName('form-control')[0].value = this.model.get('muc_domain');
         api.settings.get('auto_list_rooms') && this.updateRoomsList();
     }