It appears as if I only get one or the other or sometimes none.
I`ll receive an alert saying a topic got updated and it won't show in updated topics.
OR
I`ll receive no alert and it shows in updated topics.
OR
I`ll get nothing.
OR
I`ll get both.
This appears to be completely random.
As for some topics I`ll receive all the alerts/updates and then the next time it is updated I`ll receive one none or only one.
Spoiler: Example Picture: show (http://i.imgur.com/loNAvY8.png)