Another observation, probably also related to this issue: bindings which use OpenStreetMap show a map (e.g. MercedesMe or iCloud). But the map can only be zoomed and unzoomed by the mouse. Using +/- in the upper right corner of the map, only the “+” works out (zoom) but “-” doesn’t unzoom.
Installed 5.2.1 Release Build and can confirm that the map of my location under regional settings is back. Thanks for this fix. Understood the difference now to the OpenStreetMap issue.