I haven't noticed any unusual behaviour. Have you set the preferences like so:
In a topic
- sends notifications (and email) when anyone replies to that topic.
- no notification is sent, just an unread counter is shown on the site.
By default, you watch your own topics.
In your notification preferences
(Click your avatar in top-right → → "Notifications" on the sidebar)
The default is "First time a post is liked and daily".
Replies
-
When it comes to replying, you'll get notified if someone replies directly to your post using ,
-
If someone uses the general topic then notifications would only be sent if you're watching the topic.
-
When you post, you can set your preference to watching if you want notifications for each reply:
Mentions
You should get notified if someone @mentions
your name or if they link to your topic/post.
So that's how it works - does this help spot the notification behaviour?