Error while creating an Authorization (*)

I have a problem trying to create authorization, i’m getting a BatchExecutorException saying :

Unique index or primary key violation: "ACT_UNIQ_AUTH_USER_INDEX_6 ON PUBLIC.ACT_RU_AUTHORIZATION(TYPE_, USER_ID_, RESOURCE_TYPE_, RESOURCE_ID_) VALUES (1, NULL, 8, ‘*’, 11);

@PostDeploy
public void initialize() {
    Group group = identityService.newGroup("test_group");
    group.setName("test_group");
    identityService.saveGroup(group);

    addAuthorizationGroup(Resources.PROCESS_INSTANCE, Authorization.ANY, group.getId(), new Permission[] {Permissions.READ, Permissions.CREATE});
    addAuthorizationGroup(Resources.PROCESS_DEFINITION, "*", group.getId(), new Permission[] {Permissions.READ, Permissions.CREATE, Permissions.CREATE_INSTANCE});
}

private void addAuthorizationGroup(Resource resource, String resourceId,
                                   String groupId, Permission[] permissions) {
    Authorization newAuthorization = authorizationService.createNewAuthorization(Authorization.AUTH_TYPE_GRANT);
    newAuthorization.setGroupId(groupId);
    newAuthorization.setResource(resource);
    newAuthorization.setResourceId(resourceId);
    for (Permission permission : permissions) {
        newAuthorization.addPermission(permission);
    }
    authorizationService.saveAuthorization(newAuthorization);
}

The error does not seem to appear if I mention a particular resourceId. I think it is related to “*” (asterisk)

I have a similar problem: creating and saving a Authorization for ProcessDefinition with ResourceID=* does not cause an error message, but the authorization does not appear in the administration gui.
If I query for the created/saved authorization via java, it tells me that the authorization with ResourceID=* exists.
However, if I create a authorization the same way but for a specific ResourceID of a process definition (e.g.: ResourceID=“Invoice”) everything works as expected.