Seeking input from members Subscribed (watched) thread notification email trigger

We are seeking further input on this issue from the membership
Also, I'd like to state that I'm keen to give the new platform and new (and in most cases improved) concepts their day in the sun and not try to jam XF back into a vB shaped box. A lot of these things could be covered in a "welcome to the new platform" video or tutorial.
 
This issue seems to have not gone away.
It's been quite a while (weeks/months) since I last received an update notification email, either for threads that I am 'watching' or for ones that I created. The most recent was in the Parts forum started a few days ago. Have not received any notification of new replies.