Issue with Facebook Product Catalog API: Missing Data in Response

I've been making requests to the Product Catalog Products API using this URL:

https://graph.facebook.com/v20.0/[PRODUCT_CATALOG_ID]/products?access_token=[ACCESS_TOKEN]&filter={"name":{"i_contains":"Water"}}&fields=["retailer_id","name","description","price","visibility","inventory","url","image_url"]

Until recently, everything worked fine, but now the response only returns the name field. Here's an example of the response I'm getting:

{     "data": [         {             "name": "Water"         }     ],     "paging": {         "cursors": {             "before": "[BEFORE_CURSOR]",             "after": "[AFTER_CURSOR]"         },         "next": "[NEXT_URL]",         "previous": "[PREVIOUS_URL]"     } } 

The fields such as description, price, visibility, and others are missing. Has anyone encountered this issue, or are there changes to the API that I may have missed?