Same here too.
Discussion
Reply notifications only show when you are directly cited in the text or when your are the author of one of the replied posts.
This was made to avoid the hell threads and some scammers in the past that cite everyone without a post from you involved. But maybe it's time to change back to normal.
This assumes of course that the author of the post did not remove your from notifications when writing the post.
I'd love to have the option to flip this on or off. It would also maybe be great to be able to "subscribe" to notifications for a note
Now I see how this works. Thanks for the insight.