User's events are sometimes added automatically to Cloud Firestore for Firebase

[danieldanielecki]

Try to debug it, it might be related to this part of the code:

const [selectedLocation, setSelectedLocation] = useState<Coordinate>({
  latitude: 0,
  longitude: 0,
});

or

let markerCoordinates: Coordinate = { latitude: 0, longitude: 0 };

but it's a bit strange because addEventHandler is fired after <Button />'s onPress(...).