@SecondaryTable configuration does not handle @ManyToOne foreign keys properly

@ManyToOne @JoinColumn(name = "f_key", table = "SEC_TABL") schema tool ignores the name specified, auto-generate a name for the join column. Worse, when deleting the entity, NPE is thrown. There may also other effects. Here is the NPE stack trace in 2.2.0 version.

Caused by: java.lang.NullPointerException
at org.apache.openjpa.jdbc.meta.strats.RelationFieldStrategy.delete(RelationFieldStrategy.java:412)
at org.apache.openjpa.jdbc.meta.FieldMapping.delete(FieldMapping.java:704)
at org.apache.openjpa.jdbc.kernel.AbstractUpdateManager.delete(AbstractUpdateManager.java:287)
at org.apache.openjpa.jdbc.kernel.AbstractUpdateManager.populateRowManager(AbstractUpdateManager.java:166)
at org.apache.openjpa.jdbc.kernel.AbstractUpdateManager.flush(AbstractUpdateManager.java:95)
at org.apache.openjpa.jdbc.kernel.AbstractUpdateManager.flush(AbstractUpdateManager.java:76)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.flush(JDBCStoreManager.java:713)
at org.apache.openjpa.kernel.DelegatingStoreManager.flush(DelegatingStoreManager.java:131)
at org.apache.openjpa.datacache.DataCacheStoreManager.flush(DataCacheStoreManager.java:661)
at org.apache.openjpa.kernel.DelegatingStoreManager.flush(DelegatingStoreManager.java:131)
at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:2174)
at org.apache.openjpa.kernel.BrokerImpl.flushSafe(BrokerImpl.java:2072)
at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:1843)
... 39 more

Sample Entities (Only relevant parts, HUMAN table won't have mother_id and father_id but auto-generated MOTHER_RECORD_ID and FATHER_RECORD_ID):
----------------------------

@javax.persistence.Entity
@Table(name = "LIVING")
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "dtype")
public class Living {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "record_id")
private long systemId = 0L;

@Version
@Column(name = "version")
private long version = 0;
}

@javax.persistence.Entity
@SecondaryTable(name = "HUMAN", pkJoinColumns = @PrimaryKeyJoinColumn(name = "record_id"))
public class Human extends Living {

@ManyToOne
@JoinColumn(name = "mother_id", table = "HUMAN")
private Human mother;

@ManyToOne
@JoinColumn(name = "father_id", table = "HUMAN")
private Human father;
}