I first noticed this issue at the start of the week and I assumed that it was a one-off, but it has occurred again today.
I am watching a Bug ticket that I have previously commented and interacted on, but I am not being notified when other users comment on the ticket.
For example, I am watching the ticket below and you can see that a user commented on the ticket a couple of hours ago:

However, I have not received a notification or email:


My settings are correct and have not been changed:
