The visibility settings for the tile layer set as a basemap in the web map are not honored when the basemap is pulled into an ArcGIS Web AppBuilder web mapping application using the Basemap Gallery widget.

Solução Provisória

Create the ArcGIS Web AppBuilder web mapping application from the desired web map(s) by referring to, https://doc.arcgis.com/en/arcgis-online/create-maps/create-map-apps.htm.

Etapas para Reproduzir