Do not fit map to search result (object) twice

Do not fit map to search result (object) twice

When clicking on search results the respective osm object is loaded
asynchronously and afterwards shown on the map. Some objects can take
a few seconds to load however.

If a user already panned/zoomed the map manually during this time then
their actions are reverted because the map fits to the object again.

There is actually no need for this behaviour, because a good geocoder
already returns an appropriate bounding box for the search result.