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Probably due to opening too many tabs. I've seen cases of my comment in one post going into another post when I had multiple tabs open. That's weird. The other thing is I thought Follow and Mute are independent since there are 2 different buttons. So, I thought mute should not unfollow and just the comment are muted, right? Wrong, because I tested yesterday but muting one I follow. When I muted, then the Follow became Unfollowed. Bug or feature. Time for post to discuss maybe. :-)
Anyway, glad our friend prompted me and caught up a few.

It not about upvotes, I'm just glad that we are OK

Yes, I know you are doing it manually like me. So, I've also missed here and there when I off more times. After all, we are #whysoserious 2 :-)