Some replies not showing a notification

I don't know what this is about and if it's a new thing but I saw a reply to one of my comments not showing a notification and being marked sensitive. I'm wondering how many comments I've missed like this.

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RoguishEyes

It's a symptom of the toxic positivity programmed into the monitoring algorithm. If a comment falls short of love bombing or in total agreement, it is 'hidden' with no notification.