@savvytester you'll see 3 actions - upvote, reply, upvote & reply.
If comment is done outside inbox app, it'll still show up with pending action of vote.
If vote is done outside inbox app, it'll still show up with pending action reply.
If both actions are done outside inbox, it'll show mark as done button.
So, basically you'll have to mark all replies done from inbox & tidy up.