Security Policy Resource Group is not set properly

[xomgc3]

When specifying a resource_group for an oktapam_security_policy, it's ignored and the policy is applied to all resource groups.

resource "oktapam_security_policy" "admin" {
  name   = "${var.group_name} - Admin"
  active = true
  description = "Server Admins for ${var.group_name} Environments"
  principals {
    groups = [
      data.oktapam_group.admin.id
    ]
  }
  resource_group = oktapam_resource_group.this.id
  # ...