The 1.12 update for ArcGIS Experience Builder includes major performance enhancements for the Map widget. The widget is now capable of truly synchronized extent changes, which include camera rotation and tilt. The update is available now in ArcGIS Online and the latest version of the developer edition.
Full post on ArcGIS Blog: https://www.esri.com/arcgis-blog/products/experience-builder/announcements/synchronized-maps/