At the moment I have entered only events around Zurich, Switzerland.
What puzzles me know is the following: When I search for events in New York, the map shows me New York. When I search for events in Berlin, the map doesn’t show me Berlin and this is true for many other towns.
What you found out on your testing matches with my testing.
The reason why I brought it up is the following: When a user searches for a town and the map doesn’t move to this town, the user could get the impression, that the filter option didn’t work at all.