Question in regards to behaviour of s3-request-presigner.getSignedUrl between 3/1/2025 and 3/28/2025

[rivastomas]

We recently migrated our implementation to the AWS SDK for JavaScript v3 and completed a production release on 3/8/2025. As part of that release, we contemplated the requirement that any metadata tag that needs to be include on the generated pre-signed URL needs to be populated with a non-empty value. Any metadata tag which contained an empty value was not being included on the generated pre-signed URL and it was not added to the metadata tag collection of the object when uploaded to S3 via a HTTP PUT command.

Last week we noticed this is not a requirement any longer as the generated pre-signed URL is being able to be created with metadata empty values.

As part of the documentation for our release we need to link this change in behavior on our implementation to a specific release of the SDK. Is there any way to identify or provide information when this behavior was changed?

Thanks in advance.