JSON serialization fails on DeltaLong values

When writing a document containing a DeltaLong value in JSON a ClassCastException occurs:

DocumentPropertyJsonWriter - ClassCastException: org.nuxeo.ecm.core.api.model.DeltaLong cannot be cast to java.lang.Long

Steps:

• set up a 9.10 Nuxeo instance with the nuxeo-quota addon
• drag and drop a File to personal workspace, get this File document's uuid
• Execute the following command

  curl http://localhost:8080/nuxeo/site/automation/Document.CreateVersion   -u Administrator:Administrator   -H "X-NXRepository: default"   -H "Content-Type: application/json+nxrequest" -H "X-NXDocumentProperties:dublincore,documents_size_statistics" -d '{"input":"b4a9454e-7173-45da-9f27-23d1b3c542d1","params": {"increment":"Major"} ,"context":{}}'