This was somewhat annoying …
I clicked on the notification and it took me to the post, not the comment.
It was a post from 2016, with 287 comments, so I had to click ‘Next’, 5 times at the bottom of the comments to find the comment relating to the notification. That, in itself, wasn't easy as it wasn't at the end of the page - I had to use the ‘end’ key and then scroll up a screen or so beyond the footer and reply box to get to the “show next 50 comments” link - sometimes. 2-3 times, it went to nearly the end of the page when I clicked next … other times it navigated to the top.
After all that, the comments weren't worth viewing, but that's another story !!