Provider produced inconsistent result after apply

[MartinBaas-Tivian]

When applying a state with about 20 pingdom checks at once the following Error Message is displayed:

Error: Provider produced inconsistent result after apply

When applying changes to module.subdomain.pingdom_check.url[0], provider
"registry.terraform.io/-/pingdom" produced an unexpected new value for was
present, but now absent.

This is a bug in the provider, which should be reported in the provider's own
issue tracker.

our terraform code looks like this:

resource "pingdom_check" "url" {
  count = var.enable_pingdom ? 1 : 0

  type                     = "http"
  name                     = "subdomain.domain.tld - environment"
  host                     = "subdomain.domain.tld"
  url                      = "/url"
  shouldcontain            = "verificationstr"
  tags                     = "environment,terraform"
  encryption               = true
  resolution               = 5
  sendnotificationwhendown = 2
  userids                  = var.pingdom_users
}

terraform version: 0.12.19