[Bug]: aws_lb_target_group stickiness not reflected in plan diff

[nwalters512]

Terraform Core Version

1.3.5

AWS Provider Version

4.40.0

Affected Resource(s)

aws_lb_target_group

Expected Behavior

When I enable and configure target group stickiness outside of Terraform (for instance, via the AWS Console), I would expect that I would see a diff during terraform plan if my corresponding Terraform resource doesn't correctly include stickiness configuration.

Actual Behavior

terraform plan produces a clean diff.

Relevant Error/Panic Output Snippet

No response

Terraform Configuration Files

This snippet is taken straight from https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/lb_target_group:

resource "aws_lb_target_group" "test" {
  name     = "tf-example-lb-tg"
  port     = 80
  protocol = "HTTP"
  vpc_id   = aws_vpc.main.id
}

resource "aws_vpc" "main" {
  cidr_block = "10.0.0.0/16"
}

Steps to Reproduce

1. Apply the above config to create the target group.
2. In the AWS console, manually enable stickiness.
3. Run terraform plan with the above; observe that no diff is created.

Debug Output

No response

Panic Output

No response

Important Factoids

No response

References

It's possible that this is related to #15144; the problem described there seems to be similar.

Would you like to implement a fix?

No response

[github-actions]

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[gdavison]

Related to #22526

[github-actions]

This functionality has been released in v5.36.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.