Lost ip address of virtual machine from "terraform show" after start vm

[unix196]

terraform version
Terraform v0.15.0
on linux_amd64
+ provider registry.terraform.io/dmacvicar/libvirt v0.6.3

Your version of Terraform is out of date! The latest version
is 0.15.3. You can update by downloading from https://www.terraform.io/downloads.html

variables.tf:
variable "vm_network_addresses" {
  description = "Defines the network in the CIDR format"
  default = "10.0.1.0/24"
}

variable "vm_network_name" {
  description = "Network name for vm network"
  default = "vm_network"
}

libvirt.tf:

resource "libvirt_network" "vm_network" {
  name      = var.vm_network_name
  addresses = [var.vm_network_addresses]
  autostart = true
  mode      = "nat"

  dhcp {
    enabled = true
  }

  dns {
    local_only = true
  }
}
....
resource "libvirt_domain" "vm1" {
  name   = "vm1"
  memory = "336"
  vcpu   = 1

  network_interface {
    network_id     = libvirt_network.vm_network.id
    wait_for_lease = true
  }

output "ips_vm1" {
  value = libvirt_domain.vm1.network_interface.*.addresses
}
...

Run terraform apply, virtual machine is start.

terraform output

ips_vm1 = tolist([
  tolist([
    "10.0.1.228",
  ]),
])
ips_vm2 = tolist([
  tolist([
    "10.0.1.67",
  ]),
])

Then I stop vm (manually), then run terraform commands:

terraform plan
...
Terraform will perform the following actions:

  # libvirt_domain.vm1 will be updated in-place
  ~ resource "libvirt_domain" "vm1" {
        id          = "02e4f66f-a5bd-437d-bf6e-02b19cbfaff4"
        name        = "vm1"
      ~ running     = false -> true
        # (10 unchanged attributes hidden)

        # (4 unchanged blocks hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Changes to Outputs:
  ~ ips_vm1 = [
      - [
          - "10.0.1.228",
        ],
        [],
      + [],
    ]

terraform apply -auto-approve
...

Apply complete! Resources: 0 added, 1 changed, 0 destroyed.

Outputs:

ips_vm1 = tolist([
  tolist([]),
])
ips_vm2 = tolist([
  tolist([
    "10.0.1.67",
  ]),
])

In terraform show also didn't show ip address vm. Is it bug or feature? (After start vm from terraform apply vm receive the same address )