FWIW, confirmed issue on Xenial-Mitaka aarch64:

$ openstack server list
+--------------------------------------+-----------------------------+---------+------------------------------------+------------+
| ID                                   | Name                        | Status  | Networks                           | Image Name |
+--------------------------------------+-----------------------------+---------+------------------------------------+------------+
| 58d20cf7-a5c4-4845-8f26-47222513dfba | xenial-uefi-20170119b221218 | ACTIVE  | private=172.16.0.15, 10.111.222.70 |            |
| 3fd7e3ae-c710-44d2-9a81-3077ed89b196 | xenial-uefi-20170119b221212 | ACTIVE  | private=172.16.0.14, 10.111.222.67 |            |
| d1a8d761-44e4-464f-8056-bf58bc8b2407 | xenial-uefi-20170119b221205 | ACTIVE  | private=172.16.0.13, 10.111.222.66 |            |
| df488910-3151-43c1-9de9-794d5095b66d | xenial-uefi-20170119212539  | SHUTOFF | private=172.16.0.12, 10.111.222.65 |            |
| d7a46c4b-2b63-4a8d-9ab7-dfcbf9e7032f | xenial-uefi-20170119212534  | SHUTOFF | private=172.16.0.11, 10.111.222.69 |            |
| 5d1275ef-9346-4598-8654-10a4b0b8da47 | xenial-uefi-20170119212528  | SHUTOFF | private=172.16.0.10, 10.111.222.68 |            |
+--------------------------------------+-----------------------------+---------+------------------------------------+------------+

.

$ for i in $(openstack server list | grep uefi | awk '{ print $2 }'); do echo $i; openstack server delete $i; done
58d20cf7-a5c4-4845-8f26-47222513dfba
3fd7e3ae-c710-44d2-9a81-3077ed89b196
d1a8d761-44e4-464f-8056-bf58bc8b2407
df488910-3151-43c1-9de9-794d5095b66d
d7a46c4b-2b63-4a8d-9ab7-dfcbf9e7032f
5d1275ef-9346-4598-8654-10a4b0b8da47

.

$ openstack server list
+--------------------------------------+-----------------------------+--------+----------+------------+
| ID                                   | Name                        | Status | Networks | Image Name |
+--------------------------------------+-----------------------------+--------+----------+------------+
| 58d20cf7-a5c4-4845-8f26-47222513dfba | xenial-uefi-20170119b221218 | ERROR  |          |            |
| 3fd7e3ae-c710-44d2-9a81-3077ed89b196 | xenial-uefi-20170119b221212 | ERROR  |          |            |
| d1a8d761-44e4-464f-8056-bf58bc8b2407 | xenial-uefi-20170119b221205 | ERROR  |          |            |
| df488910-3151-43c1-9de9-794d5095b66d | xenial-uefi-20170119212539  | ERROR  |          |            |
+--------------------------------------+-----------------------------+--------+----------+------------+


Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2510, in do_terminate_instance
    self._delete_instance(context, instance, bdms, quotas)
  File "/usr/lib/python2.7/dist-packages/nova/hooks.py", line 154, in inner
    rv = f(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2473, in _delete_instance
    quotas.rollback()
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
    self.force_reraise()
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
    six.reraise(self.type_, self.value, self.tb)
  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2437, in _delete_instance
    self._shutdown_instance(context, instance, bdms)
  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2346, in _shutdown_instance
    requested_networks)
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
    self.force_reraise()
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
    six.reraise(self.type_, self.value, self.tb)
  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2333, in _shutdown_instance
    block_device_info)
  File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1039, in destroy
    destroy_disks, migrate_data)
  File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1152, in cleanup
    self._undefine_domain(instance)
  File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1051, in _undefine_domain
    {'errcode': errcode, 'e': e}, instance=instance)
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
    self.force_reraise()
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
    six.reraise(self.type_, self.value, self.tb)
  File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1045, in _undefine_domain
    guest.delete_configuration()
  File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 224, in delete_configuration
    self._domain.undefine()
  File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 186, in doit
    result = proxy_call(self._autowrap, f, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 144, in proxy_call
    rv = execute(f, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 125, in execute
    six.reraise(c, e, tb)
  File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 83, in tworker
    rv = meth(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 2701, in undefine
    if ret == -1: raise libvirtError ('virDomainUndefine() failed', dom=self)
libvirtError: Requested operation is not valid: cannot delete inactive domain with nvram