admin UI causes exception while loading a managed resource with a relationship to a non-existent resource

                    "mygroups" : {
                        "title" : "mygroups",
                        "viewable" : true,
                        "searchable" : false,
                        "userEditable" : false,
                        "returnByDefault" : false,
                        "type" : "array",
                        "items" : {
                            "type" : "relationship",
                            "reverseRelationship" : true,
                            "reversePropertyName" : "mymembers",
                            "validate" : false,

POST /openidm/managed/user?_action=create
{
	"givenName" : "test2",
	"sn" : "test2",
	"userName" : "test2",
	"mail" : "test2@example.com",
	"mygroups" : [{"_ref": "managed/group/group2"}]
}

GET /openidm/managed/user/61749b6c-7785-43f8-9e9e-0ff15b6bf6a6?_fields=*,mygroups

{
    "_id": "61749b6c-7785-43f8-9e9e-0ff15b6bf6a6",
    "_rev": "0000000062d979ff",
    "givenName": "test2",
    "sn": "test2",
    "userName": "test2",
    "mail": "test2@example.com",
    "accountStatus": "active",
    "effectiveRoles": [],
    "effectiveAssignments": [],
    "mygroups": [
        {
            "_ref": "managed/group/group2",
            "_refResourceCollection": "managed/group",
            "_refResourceId": "group2",
            "_refProperties": {
                "_id": "9cb5020f-d53d-48be-a8d2-ad829da24f1f",
                "_rev": "00000000852aa0ed"
            }
        }
    ]
}

-> [164] Sep 04, 2019 10:54:51.900 AM org.forgerock.openidm.relationship.EdgeCollectionInternals lambda$dispatchQuery$3
SEVERE: Error expanding resource: No Such Entry: The search base entry 'uid=group2,ou=group,ou=managed,dc=openidm,dc=forgerock,dc=com' does not exist
org.forgerock.json.resource.NotFoundException: No Such Entry: The search base entry 'uid=group2,ou=group,ou=managed,dc=openidm,dc=forgerock,dc=com' does not exist
	at org.forgerock.opendj.rest2ldap.Rest2Ldap.asResourceException(Rest2Ldap.java:354)
	at org.forgerock.opendj.rest2ldap.SubResourceImpl.lambda$adaptLdapException$22(SubResourceImpl.java:1109)
	...
	at org.forgerock.openidm.repo.opendj.impl.OpenDJRepoService.handleRead(OpenDJRepoService.java:176)
	...
	at org.forgerock.openidm.managed.ManagedObjectSet.readInstance(ManagedObjectSet.java:1012)
	...
	at org.forgerock.openidm.relationship.EdgeInternals.expandFields(EdgeInternals.java:644)
	at org.forgerock.openidm.relationship.EdgeCollectionInternals.lambda$dispatchQuery$3(EdgeCollectionInternals.java:288)
	at org.forgerock.openidm.relationship.impl.augmentation.AugmentingQueryResourceFilterProxy.handleResource(AugmentingQueryResourceFilterProxy.java:51)
	...
	at org.eclipse.jetty.server.Server.handle(Server.java:499)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
	at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
	at java.lang.Thread.run(Thread.java:748)
Caused by: No Such Entry: The search base entry 'uid=group2,ou=group,ou=managed,dc=openidm,dc=forgerock,dc=com' does not exist
	at org.forgerock.opendj.ldap.LdapException.newLdapException(LdapException.java:246)
	at org.opends.server.protocols.ReactiveHandlersUtils.emitResult(ReactiveHandlersUtils.java:390)
	at org.opends.server.api.ClientConnection.sendResponse(ClientConnection.java:301)
	at org.opends.server.core.SearchOperation.sendSearchResultDone(SearchOperation.java:636)
	at org.opends.server.core.SearchOperation.run(SearchOperation.java:779)
	at org.opends.server.protocols.internal.AbstractInternalClientConnection.handleRequest(AbstractInternalClientConnection.java:365)
	at org.opends.server.protocols.internal.AbstractInternalClientConnection.lambda$handle$0(AbstractInternalClientConnection.java:348)
	...
	at org.opends.server.protocols.internal.AbstractInternalClientConnection$InternalConnection.search(AbstractInternalClientConnection.java:146)
	at org.forgerock.opendj.ldap.AbstractSynchronousConnection.searchAsync(AbstractSynchronousConnection.java:132)
	at org.forgerock.opendj.rest2ldap.authz.TransactionIdConnection.searchAsync(TransactionIdConnection.java:99)
	at org.forgerock.opendj.ldap.AbstractConnection.searchAsync(AbstractConnection.java:352)
	at org.forgerock.opendj.ldap.AbstractConnection.searchSingleEntryAsync(AbstractConnection.java:378)
	at org.forgerock.opendj.rest2ldap.SubResourceImpl.read(SubResourceImpl.java:898)
	... 422 more

{
    "code": 400,
    "reason": "Bad Request",
    "message": "The referenced object 'managed/group/group2', does not exist"
}