join with double intersect scan returns no rows

Load travel-sample, drop all indexes created by default.

create index def_type on `travel-sample`(type);
create index def_city on `travel-sample`(city);

select h.city, h.name, a.airportname from `travel-sample` a join `travel-sample` h on a.city = h.city where h.type = "hotel" and a.type = "airport";

this query uses intersect scan of the two indexes under nested-loop join. Return no result.

select h.city, h.name, a.airportname from `travel-sample` a join `travel-sample` h USE HASH(build) on a.city = h.city where h.type = "hotel" and a.type = "airport";

this query forces hash join and returns 2212 result documents.