UI not returning date histogram when document entities have dates

[brrttwrks]

The UI is sometimes not returning the date histogram, even though the Document entities have date property values set.

https://aleph.occrp.org/datasets/5707?csfacet=dates&csfacet_interval%3Adates=year&csfacet_size%3Adates=10&csfacet_total%3Adates=true&cslimit=30&csq=#mode=search

Here is the API call:

https://aleph.occrp.org/api/2/entities?facet=dates&facet_interval:dates=year&facet_size:dates=10&facet_total:dates=true&filter:collection_id=5707&filter:schemata=Thing&highlight=true&limit=30&q=

date_facet_response.json.zip