!= returns incorrect result in sub-query (select * from b0 where field != (select...)))

Create two buckets b0 and b1 with primary indexes defined using gsi.

In each bucket ass 3 documents with (key, value) pairs defined as follows

"1":

{ "id": "1", "int_field1": 1 }

"2":

{ "id": "2", "int_field1": 2 }

"3":

{ "id": "3", "int_field1": 3 }

The following sub-query based N1QL Stmt returns incorrect results

select * from b0 where TO_ARRAY(int_field) != (array c.int_field for c in (select int_field from b1 US}
{
"requestID": "c55d9a23-9b77-401d-8d5a-c2c86ba15f7c",
"signature":

{ "*": "*" }

,
"results": [
{
"b0":

{ "id": "3", "int_field": 3 }

}
],
"status": "success",
"metrics":

{ "elapsedTime": "16.565313ms", "executionTime": "16.428324ms", "resultCount": 1, "resultSize": 103 }

Missing json document

{ "id": "1", "int_field": 1 }