Hi Ingo ,
I've faced a similar problem. You can find a solution by checking the column properties related to how the map looks on the page (auti-fill , auto-fit etc. ) .
I have used latitude and longtitude in my own program. The reason why the map does not work as you want (like View, in shift) may be that the map cannot process the information you entered.
The information in the link below may be helpful. i hope it helps
https://docs.mendix.com/appstore/widgets/maps/
Regards
Ridvan