[BUG] Inconsistent results of an LSQB query
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Description
**Describe the bug**
When running lsqb benchmark (on lsqb dataset sf=3), a query (Q8) outputs inconsistent results. The query is:
```
MATCH (message)-[:hasTag]->(tag1),
(comment)-[:hasTag]->(tag2),
(comment)-[:replyOf]->(message)
WHERE tag1<>tag2 and not (comment)-[:hasTag]->(tag1)
RETURN COUNT(message)
```
, and the results are inconsistent:

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