1. Yes, for example, I get a new message in conversation. I see the notification only if I refreshed the page. I mean the nombre in red on the avatar.
In pro dolphin on the contrary it is updated in real time.

2. Not just the number of notification decreases only if I reply to a message. If I read the message and I do not answer it seems to remain infinitely account.
Example here, if I'm just reading your answer is the number 10. I can refresh the page it does not change.
If I answer, as I do now, so it then passes to 9.
In other words, I must respond "thank you" to your answers just to drop that number to zero.