I don’t think that can be it either. I purged cache a bunch of times and logged in users don’t get a cached version (AFAIK). I even tried to switch themes (SemPress) but I still get two separate comments and no facepile.
I am sure that the plugin is running because I see u-like
and h-card
in the comments which—I am guessing—would’ve been missing without it?
In case it helps I am listing the plugins I have installed, maybe I am missing something, or some other plugin is overriding: Advanced Tagline, ACF, Akismet, Async Javascript, Crayon Syntax Higlighter, IndieWeb, Jetpack, Semantic Linkbacks, Syndication Links, W3 Total Cache, Webmention, Yoast.