When view rights are removed (in our case by accident) from a component of a submap, the entire map structure which involves this component and map becomes unavailable.
The feature request would be to instead of making the entire map and submaps unavailable, create an icon for the unavailable component. This way the map will be available, and it is easy to discover the component without the viewing rights.
1) Map should be available if user has access to at least one map element.
2) Display a greyed out icon if user has no permissions to this elements.