terraform-provider-google: Error: Provider produced inconsistent final plan - google_dns_record_set - rrdatas list with unknown value

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Issue:

Using a value that is unknown until apply in the rrdatas list of a google_dns_record_set resource causes an inconsistent plan error.

Terraform Version

Terraform v1.2.4 on linux_amd64

Affected Resource(s)

• google_dns_record_set

Terraform Configuration Files

terraform {
  required_providers {
    google = {
      source  = "hashicorp/google"
      version = ">= 4.24.0"
    }

    random = {
      version = ">= 3.3.2"
    }
  }
}

resource "random_id" "project_id" {
  keepers = {
    project_id = "my-project"
  }
  byte_length = 8
  prefix      = "project-"
}

resource "google_project" "my_project" {
  name = "my-${random_id.project_id.hex}"
  project_id = "${random_id.project_id.hex}"
}

resource "google_dns_record_set" "cdn_dns_txt_record_firebase" {
  name         = "www.example.com"
  project      = google_project.my_project.project_id
  managed_zone = "example.com."
  type         = "TXT"
  ttl          = 300
  rrdatas      = ["\"v=spf1 include:_spf.firebasemail.com ~all\"", "firebase=${google_project.my_project.id}"]
}

Debug Output

https://gist.github.com/zymotik/5ad37a5534314b835d64a48358b8ddf6

Panic Output

Error: Provider produced inconsistent final plan
When expanding the plan for google_dns_record_set.cdn_dns_txt_record_firebase to include new values learned so far during apply, provider
"registry.terraform.io/hashicorp/google" produced an invalid new value for .rrdatas: was null, but now cty.ListVal([]cty.Value{cty.StringVal("\"v=spf1
include:_spf.firebasemail.com ~all\""), cty.StringVal("firebase=projects/project-bf0a809a64d28d47")}).
 
This is a bug in the provider, which should be reported in the provider's own issue tracker.

Expected Behavior

Plan should include rrdatas element on the google_dns_record_set.cdn_dns_txt_record_firebase resource indicating value known after apply.

Actual Behavior

Error reported:

Error: Provider produced inconsistent final plan

Steps to Reproduce

1. terraform apply

References

This issue maybe related:

• https://github.com/hashicorp/terraform-provider-google/issues/10131