From different data sets of the official survey, a geoservice of type WMS was created usingsingle Layers and visualized within M.App Enterprise Desktop. The Layers contain around 10 legend entries (Vector Data) from PostGis-Views.
The WMS Layer is only rarely visualized in M.App Desktop. Mostly, it is only visualized for one scaling level (ex. 1:337 - WMS1.png) and disappears while zooming in or out (WMS2.png). Also, it disappears when moving the map or can't be visualized at all. Setting min. and max. scale in the WMS settings did not change anything. When creating a WMS with only one legend entry (deactivate single layer), the visualization is normal (exceptions for specific legend entries).