Messages count in User`s info part in post doesn`t reflect actual data

Message count in User profile is not changed on creating new post.
How to reproduce:

1. open user profile, note the post count
2. create new post and overview the post count in user info part in created post
   As a result, the same count is still shown. BTW,the right number is shown in the User's profile page.
   Expected, that counter should increases by 1 both in User Profile and user info part.