I have expected the following Overpass query to return all relations with admin_level="2", i. e. all countries.
relation[admin_level="2"];
out tags;
However, at least the relation for Finland is not returned, although such a relation with admin_level="2" does exist:
relation(54224);
out tags;
I cannot reproduce the issue. According to the following query, rel 54224 is part of the result.
relation[admin_level="2"];
rel._(54224);
out tags;
You didn’t exactly write how you came to your conclusion for the first query. In case you were using overpass turbo, be aware that the browser search does NOT work there.
Download the query results to a file instead, and inspect the file locally. You will see that relation 54224 is included in the original query result.
