IllegalStateException: Current item is null while edit category attribute via entity inspector about jmix HOT 1 OPEN

@JmixEntity
@Entity(name = "dynat_CategoryAttribute")
@Table(name = "DYNAT_CATEGORY_ATTR")
@SystemLevel
public class CategoryAttribute implements Serializable {

    @Embedded
    @AttributeOverrides({
            @AttributeOverride(name = "entityId", column = @Column(name = "DEFAULT_ENTITY_VALUE")),
            @AttributeOverride(name = "stringEntityId", column = @Column(name = "DEFAULT_STR_ENTITY_VALUE")),
            @AttributeOverride(name = "intEntityId", column = @Column(name = "DEFAULT_INT_ENTITY_VALUE")),
            @AttributeOverride(name = "longEntityId", column = @Column(name = "DEFAULT_LONG_ENTITY_VALUE"))
    })
    @EmbeddedParameters(nullAllowed = true)
    private ReferenceToEntity defaultEntity;

// ...

}