The same query returns different results

I have a Couchbase cluster which consists of multiple nodes installed on VMs.
The same query returns different results: empty list or existing document (there is an appropriate document in Couchbase). And there are no any errors and warnings in response.
I have this behavior both when working through the SDK, and through the UI.

Couchbase version: Community Edition 6.0.0 build 1693 ‧ IPv4

What can be a reason of such behavior?

Hi @johndoe,

Would you mind posting the quer(ies), the indexes, and what you expect the results to be?

Check the index used during empty results. See if that index has entries in it. If not drop and re-create and try it