XP bonus for playing a hero is super buggy


I have now matched into a lot of QM games with an XP bonus on my hero.
Except that when I am in the match, there is no XP bonus shown, it also is not applied after the match.
I then go back to hero selection, the hero still shows an XP bonus.
I match again, again no bonus in the game, again back in selection it shows a bonus.
This has been happening since a week now and is quite irritating.