Oh. Yeah, the current behavior is super unintuitive to me.
It would make much more sense to me if it kept its current copy and how it builds the list -- "here are topics that have recent activity" -- but if, instead of always going to post #1 in the linked topic, it went to your last unread position automatically. It was very frustrating to keep coming back and trying to click into the Scrolling test thread while I was interacting with it, and keep getting shunted back to post #1.
I guess that makes this more of a feature request than a bug report, if the "go to post 1 in the recent topics" behavior is intended.