Microsoft Word Citation Error - Showing the Article Title

I encounter this problem when I have at least two paper references written by the same person. I use APA format, and when you cite a paper in the document, the format should go: (Lastname, Year).

There is no problem until I add the second paper from a person whose first paper I have used in the document. When that happened, their format went: (Lastname, Title, Year). Here I attach the screenshot as well.

I've searched in Office Forum with terms "Word citation error" or "Two references from the same author", but yielded no result. I am using Microsoft 365. Any help appreciated!

You can remove the title manually. Right-click on the citation, select Edit Citation.

On the Edit Citation window, on the Suppress section, select Title, then click OK.