I recently opened one of my earlier asked question and I was surprised to see that there was a big discussion going on in the comments of one of the answers. But here I have not received any notification of these comments. It seems that if I have posted something, eg, a question or an answer and a comment is added on top of only the item posted by me then only I will get notified else I will not.
In my case since the question was asked by me and answer was posted by someone else so all the comments notifications added on the answer would be going only to the one who answered or the people tagged with @ symbol. But since I was the one who asked the question it was initially my doubt, and people discussing or telling good information in comments is something that just goes unnoticed by me because of the site feature.
I request to get this feature corrected such that the person who has asked the question gets notified for all the answers/comments that gets added/edited/deleted with his question/answers.