[Datasets] Search function doesn't work on specific datasets

[mariaclaudia]

Subject of the issue

It's not possible to retrieve an existing dataset by the search function.

Your environment

Safari/Chrome

Steps to reproduce

1. Login into https://dataportal-private.daf.teamdigitale.it
2. Type "strutturericettivepiemonte" into the search box (the name of an existing dataset with access permission)
3. Press "Cerca"

Expected behaviour

The dataset has to be listed in the search list.

Actual behaviour

The dataset is not displayed.

Note

It's not a standard behaviour. For some dataset the function works properly.
The dataset exists and the table name is: REGI__europa.test_ingestion_o_test_strutturericettivepiemonte
A dashboard with Superset is available:
test_piemonte_strutture_ricettive