https://support.esri.com/en-us/bug/in-portal-for-arcgis-a-map-service-containing-unique-la-bug-000091784
BUG-000091784 for Portal for ArcGIS
In Portal for ArcGIS, a map service containing unique layer IDs in a web application built with Web AppBuilder for ArcGIS does not display correctly in the...
bugportalarcgis