We have noticed that since the openFDA /device/event update on 2024-06-04 the the API results return empty mdr_text fields for all records (e.g., "mdr_text": []). We have not confirmed if other fields are empty.
Query results from MAUDE website include the "Event Text" data, and the json dataset files last updated on 2024-06-08 contain mdr_text data.