'terraform state rm' doesn't delete child module

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When using the commands terraform state rm module.xxx child modules are not deleted.

Terraform Version

Terraform v0.12.18
+ provider.aws v2.42.0
+ provider.random v2.2.1

Terraform Configuration Files

My state looks like this:

$ terraform state list | grep app_stg02
module.app_stg02.data.aws_iam_policy_document.app_notification_queue
module.app_stg02.aws_sqs_queue.app_notification_queue
module.app_stg02.aws_sqs_queue_policy.app_notification_queue
module.app_stg02.module.db.aws_security_group.main
module.app_stg02.module.db.random_id.master_password
module.app_stg02.module.db.random_id.snapshot_identifier
module.app_stg02.module.db.module.rds.module.db_instance.data.aws_iam_policy_document.enhanced_monitoring
module.app_stg02.module.db.module.rds_replica.module.db_instance.data.aws_iam_policy_document.enhanced_monitoring

Expected Behavior

This command deletes all state objects, including child modules: terraform state rm module.app_stg02

Actual Behavior

There is the child module still left in the state under the old name:

$ terraform state rm module.app_stg02
Removed module.app_stg02.data.aws_iam_policy_document.courier_notification_queue
Removed module.app_stg02.aws_sqs_queue.courier_notification_queue
Removed module.app_stg02.aws_sqs_queue_policy.courier_notification_queue

$ terraform state list | grep app_stg02
module.app_stg02.module.db.aws_security_group.main
module.app_stg02.module.db.random_id.master_password
module.app_stg02.module.db.random_id.snapshot_identifier
module.app_stg02.module.db.module.rds.module.db_instance.data.aws_iam_policy_document.enhanced_monitoring
module.app_stg02.module.db.module.rds_replica.module.db_instance.data.aws_iam_policy_document.enhanced_monitoring

Steps to Reproduce

See above

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@hashibot this is a bug

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@apparentlymart can we change the labels?