Reviewer attachment available for author in decision letter? (

When a reviewer uploads an attachment (reviewer files) it may need to be shared with the author. I have done this, and the attachment was flagged in the editor decision and the reviewer comments were included in the decision letter for the author:

Screen Shot 2020-10-15 at 13.18.35

However, the author has no access to the attachment:

Screen Shot 2020-10-15 at 13.19.32

what is not working correctly? any suggestions on this, please? Thank you!