REST v2 - Apply multiple tags to contact is not working

@OmarAlmonte According to the REST v2 documentation here:

…we should be able to make a PATCH request to the contact record and apply multiple tags to a contact by passing this querystring:
?update_mask=tag_ids

… and the JSON:
{
“tag_ids”: [25508,23713]
}

The request returns a 200 OK response, but DOES NOT update the contacts tags.

Is this a bug, a per tenant issue, bad documentation or I’m doing something wrong, and the API isn’t calling me out on the error?

We identified this as a bug on our end. We’ll work on getting it fixed, and I’ll keep you updated on the progress. Thanks for bringing this to our attention!