I am trying to use the web Appbuilder for ArcGIS Portal (10.5) with an add data widget. According to the documentation at --> Add Data widget—Portal for ArcGIS | ArcGIS Enterprise there should be an option to configure the widget to add local files. When I attempt to configure this widget in Portal 10.5 WAB the only options I am presented with are Allow my content, Allow my Organization, Allow ArcGIS Online. There is no option for Allow File.
Conversely, if I login in to ArcGIS Online and and create a new app with web appbuilder there is the option as stated for allow file within the add data widget configuration.
Does anyone out here on GeoNet have the same issue or know if this is a bug or documentation error? I'm fairly new to Portal for ArcGIS coming from a few years experience with AGOL and web appbuilder.