Murano reads wrong heat stack output and doesn't identify FIP in case of nova-network

If user has "nova-network" instead of "neutron" then after successful deployment of murano application user sees following message in deployment logs:
<Application> is available at http://None

while heat reports correct output:
Outputs

mgqdrid8xc0us4-assigned-ips
Network IPs assigned to mgqdrid8xc0us4 instance
{
  "novanetwork": [
    "10.0.0.2",
    "172.18.171.111",
    "172.18.171.112"
  ]
}
mgqdrid8xc0us4-floatingIPaddress
Floating IP of mgqdrid8xc0us4
172.18.171.111

murano got following instance settings:
{
                "instance": {
                    "availabilityZone": "nova",
                    "name": "mgqdrid8xc0us4",
                    "securityGroupName": null,
            ---> "assignFloatingIp": true,
                    "ipAddresses": [
                        "10.0.0.2",
                        "172.18.171.111",
                        "172.18.171.112"
                    ],
                    "networks": {
                        "useFlatNetwork": false,
                        "primaryNetwork": null,
                        "useEnvironmentNetwork": true,
                        "customNetworks": []
                    },
                    "keyname": "",
                    "sharedIps": [],
            ---> "floatingIpAddress": null,
                    ...
            }