Wildcard search for field does not return all fields if store:false

[robin13]

If fields are not stored ("store":false in mapping), it is still possible to query fields using the "fields":[ "foo", "bar" ] query syntax as the fields are taken from the _source.
If however you use a wildcard : "fields": [ "*" ] then no fields are returned.

[tlrx]

I think we should update the documentation to make it more explicit that "fields":["*"] only returns stored fields and won't extract all fields (stored or unstored) from _source.