Grafana Table or Graph plugin with Elasticsearch not able to filter

Grafana Elasticsearch
1

Hello,

Would appreciate any help!

I am querying Elasticsearch 7.0+ from Grafana (7.1.3)

If i run the following query:
fields.Site.keyword :“SITE_1” AND fields.Environment.keyword : “Staging” AND host.name.keyword : “SERVER_1” AND log_level.keyword : "INFO "

Then it not only returns log_level.keyword = "INFO " but other field values as well, such ERROR and WARN though their values are always zero but they are always populated, why?

See Grafana snippet:
I only asked for log_level.keyword : "INFO "

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I need to know whether it is a bug or expected behaviour or I am doing something wrong.

A simple lucene query in kibana yields correct result with or without grouped over time or terms

fields.Site.keyword :“SITE_1” AND fields.Environment.keyword : “Staging” AND host.name.keyword : “SERVER_1” AND log_level.keyword : "INFO "