YouTube not showing some of the comments (visible from Studio Dashboard tho)

I am not sure if it is a bug or what. From time to time, when there is some discussions in the comment session (like 5+ replies to a comment). Some of the replies will not show in the public view, but I could still see it inside my Studio dashboard.

I checked it's not under the "Held" tab. I can still like and reply to it. But from the public view, it looks like I am talking to myself.

It's bad because some viewers thought I deleted their replies, which in fact is not.

Anyone also face the same?