Instance cannot resize ephemeral disk in Red Hat OpenStack

Issue

openstack server resize ¹ does not resize Ephemeral disk, only Disk size.

[heat-admin@controller-2 ~]$ openstack flavor list
+-------+--------------+-------+------+-----------+-------+-----------+
| ID    | Name         |   RAM | Disk | Ephemeral | VCPUs | Is Public |
+-------+--------------+-------+------+-----------+-------+-----------+
| 1     | m1.tiny      |   512 |    1 |         0 |     1 | True      |
| 13    | m1.tiny.plus |   512 |    3 |         1 |     1 | True      |
                                               ^^^