Have any Jellies experienced where you are following a question, new comments are posted yet you receive no notifications in your Activity?

I’ve suspected this on a few questions: I was following but didn’t get notifications in my activity. It’s hard to trace because you’d have to click on every question you know you’re following in order to figure out if you’ve been deprived of getting it in “Activity for You.”

It doesn’t happen on all things I’m following, just a few here and there.

Today there was a post with a lot of comments, and I commented too, yet received nothing in my “Activity for You.” I double checked that I was “following” and yet didn’t get any notification.

Has anybody else noticed this on their activity?