Unexpected node created with id -1and without label

[arthur]

profile MATCH (phase:Phase {_id: "inputId1"})<-[:HAS]-(project:Project) MATCH (height:Height{height: 1, _id: "inputId2"}) MERGE (height)-[:HAS]->(phase) WITH phase, project MATCH (project)-[:HAS*0..]->(space:Space) MATCH p=(space:Space)-[:HAS*0..]->(:Region) WHERE length(p)=0 MERGE (space)-[:EXISTSIN]->(phase) RETURN space, phase

• neo4j 4.0-betta
• nodejs driver