Error: Provider produced inconsistent final plan

[hae-andrew-young]

I'm running into this error when using this provider. Any idea what's going on here? Oddly enough, sometimes it does not error out but it does often enough for this to be a problem for us.

│ Error: Provider produced inconsistent final plan
│ 
│ When expanding the plan for
│ module.foo-environments["wanted-mayfly"].windns_record.cnames to include
│ new values learned so far during apply, provider
│ "registry.terraform.io/nrkno/windns" produced an invalid new value for
│ .records: was null, but now
│ cty.SetVal([]cty.Value{cty.StringVal("foo.example.com")}).
│ 
│ This is a bug in the provider, which should be reported in the provider's
│ own issue tracker.

The usage looks like this

resource "windns_record" "cnames" {
  name      = var.name
  zone_name = var.domain_to_join
  type      = "CNAME"
  records   = ["${local.app_vm_name}.${var.domain_to_join}"]
}