Terraform apply does not report error if snippet VCL is invalid

[jimr6007]

Terraform Version

Terraform v1.3.9
on linux_amd64
+ provider registry.terraform.io/fastly/fastly v5.3.1
+ provider registry.terraform.io/hashicorp/aws v4.46.0

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Affected Fastly Terraform Resource(s)

Please list the affected resources, for example:

• fastly_service_vcl

Terraform Configuration Files

vcl {
    name    = "main"
    content = "${file("${path.module}/main.vcl")}"
    main    = true
  }

compared to 

snippet {
    name    = "log4j-detect"
    content = "${file("${path.module}/snippet-log4j-detect.vcl")}"
    type    = "recv"
  }

Expected Behavior

When I "terraform apply" with activate=false I'm expecting to see errors from the Fastly API if my VCL has errors.
This is exactly what happens when I include the "vcl" parameter with "content"

however, with a "snippet" if the there is invalid VCL, the terraform apply reports "success"
even though in the Fastly webui console we see that for the Service in question we now have a new draft that is reporting invalid VCL

What should have happened?

a "snippet" with invalid VCL should result in a "terraform apply"with "activate=false being a failure, non-zero return status

Actual Behavior

a "snippet" with invalid VCL and "terraform apply"with "activate=false returns 0, terraform apply "okay"
but the webui console does show a new draft, with VCL errors

Debug Output (optional)

Please provide a link to a GitHub Gist containing the complete debug output (see Terraform docs). Ensure any sensitive data is <REDACTED>.

Steps to Reproduce

Please list the steps required to reproduce the issue, for example:

1. terraform apply

Important Factoids (optional)

Is there anything atypical about your account or set up that we should know?