A family of Microsoft word processing software products for creating web, email, and print documents.
Hi,
Sorry about the issue, I am a Microsoft products user like you are and will try to assist you.
I am guessing you are trying to delete the documents in the "Recent" list because they appear there even after you have deleted them from your Mac, right?
I delete remove them individually from the Recent list as well by right-clicking on them and selecting "Remove from Recent".
You can leave a Feedback for Microsoft by clicking on "Help" > "Feedback".
Let me know if this answers your question.
Kind regards, Amit