Identification Identifiers API endpoint doesn't return results beyond page 1 if per_page parameter is specified

The Get Identification Identifiers API endpoint
(https://api.inaturalist.org/v1/identifications/identifiers) doesn’t return any results beyond page 1 if per_page is also specified as a parameter in the request.

(expected) this returns results (when per_page is not included):
https://api.inaturalist.org/v1/identifications/identifiers?current_taxon=true&own_observation=false&is_change=false&current=true&taxon_id=55401&page=2&order=desc&order_by=created_at

(unexpected) this returns no results (when per_page=30 is included in parameters):
https://api.inaturalist.org/v1/identifications/identifiers?current_taxon=true&own_observation=false&is_change=false&current=true&taxon_id=55401&page=2&per_page=30&order=desc&order_by=created_at

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