Alert for OpenSearch Datasource gets wrong value

I’m using Grafana 8.3.3 with AWS OpenSearch service 1.1.

Visualization worked.

However, it looks like alerting is buggy. It shown no data:

Sometimes, it shown 0 in Time series and 2228-05-25 04:43:59 and 17 hours aggregation in Table.

If I used Elasticsearch Datasource for the same OpenSearch URL, it worked:

If I saved the alert for OpenSearch Datasource, it said no data, but it shown the collect graph in Explore

Does anyone successfully create an alert for OpenSearch Datasouce?

Add more graph because this forum blocked me to add 3 or more images.

Visualization worked.

If I saved the alert for OpenSearch Datasource, it said no data, but it shown the collect graph in Explore