Looks like you’re using WordPress SEO by Yoast, yes? Seems that is overwriting the page title. Looking at Yoast’s code, I think the simple solution would be to run the Connections page title filter after Yoast.
Try changing the
10 on this line:
After you do, share a link that is being reported as a duplicate title so I can see if it is working or not. If that is the solution, I make this change to so it is included in the next update.