This looks like a misunderstanding.  The "POI name: Herzkasperlzelt" is gone and the place is now  "Boandlkramerei Festzelt Oide Wiesn".

The OSM data base is already correct here  (see (1)), so the confusion was caused by outdated offline map data in Organic Maps.

(1) https://www.openstreetmap.org/way/240545786