[2.5] dnssresources read outputs nothing when there are machines with assigned IP's and records in the zone file

I have a MAAS were there are multiple resource records for both, machines and controllers. These are listed in the UI just fine, however they are not exposed over the API (see screenshots for comparison).

ubuntu@maas00:~$ maas user1@ldap dnsresources read
Success.
Machine-readable output follows:
[]
ubuntu@maas00:~$ maas user1@ldap dnsresource-records read
Success.
Machine-readable output follows:
[]

ubuntu@maas00:~$ maas user1@ldap domains read
Success.
Machine-readable output follows:
[
    {
        "authoritative": true,
        "ttl": null,
        "is_default": true,
        "resource_record_count": 0,
        "name": "maas",
        "id": 0,
        "resource_uri": "/MAAS/api/2.0/domains/0/"
    },
    {
        "authoritative": true,
        "ttl": null,
        "is_default": false,
        "resource_record_count": 0,
        "name": "maaslab",
        "id": 1,
        "resource_uri": "/MAAS/api/2.0/domains/1/"
    },
    {
        "authoritative": false,
        "ttl": null,
        "is_default": false,
        "resource_record_count": 0,
        "name": "foo.com",
        "id": 2,
        "resource_uri": "/MAAS/api/2.0/domains/2/"
    },
    {
        "authoritative": false,
        "ttl": null,
        "is_default": false,
        "resource_record_count": 0,
        "name": "gate.local",
        "id": 3,
        "resource_uri": "/MAAS/api/2.0/domains/3/"
    }
]

ubuntu@maas00:/etc/bind/maas$ grep -sr node01 *
zone.90.90.10.in-addr.arpa:3 30 IN PTR node01.maaslab.
zone.maaslab:node01 30 IN A 10.90.90.3
ubuntu@maas00:/etc/bind/maas$ grep -sr node02 *
zone.90.90.10.in-addr.arpa:4 30 IN PTR node02.maaslab.
zone.maaslab:node02 30 IN A 10.90.90.4