I can see only documents matched by "FlightDelay": true rule
I can see anonymized Dest field
I still can use the _search/ query, though I have limited it by the pattern opensearch_dashboards_sample_data_fl* for search only on the opensearch_dashboards_sample_data_flights index
Additionally, I have checked the same rules and settings on my local OpenSearch (also as 1.2) and there everything works as I expected.
Did I forget about something or is there anything else that I must do?