Edit: This is a weird thread, and might be a one-off. Maybe I have one of those users blocked and it's hiding the rest of the thread? I dunno, and I'll check. // It doesn't appear that I have any of those users blocked.
After opening my profile history, I can open a thread in my profile view. Clicking into a reply comment takes me to my comment on the post.
I cannot see the full comment thread when I view the full posts history on a post and trying to actually get to new comments is like trying finding the exit at IKEA.
Basically, I can't navigate to a thread to reply, and I had an awesome snarky comment prepared, but forgot it trying to get there.
Navigation behavior is so strange, either I have developed pre-release Alzheimer's, or Connect is bugged. (I don't discount either scenario.)
Sorry, I got jokes today.
Same thread, different views: