Steps to reproduce

1. Create the Telemetry query item with Signal type traces, and columns that are specific to traces
2. Switch signal type to Metrics or Logs
3. Expand the dropdown of column which is not present for this signal type
4. Press Tab button
   Result:
   Columns becomes empty
   See video:
   

Expected:
Field should't become empty. Probably dropdown should be closed in such case.

Note: same issue is reproducible with aggregated columns and conditions