Mixed source - Elasticsearch/Testdata DB conflicting

Hi,
When choosing mixed data-sources and choosing Elasticsearch with Testdata DB for manual csv values, the values from testdata DB is randomly not displaying.

How to reproduce:

  1. Choose mixed data sources
  2. Choose a testdata db source in query A.
  3. Choose elasticsearch in query B.
  4. Add transform “Filter by Name”.
    4.1. Choose field from csv values and elasticsearch.
  5. Save and refresh.

CSV will be gone and i have to rechoose csv field in “Filter by Name” transform to show up.

Grafana version: 8.2.7