[LOR] Weekly Vault bug / Display error

The weekly vault reward doesn't advance past level 5 for me, although after a game it clearly states that i'm level 6 and that there are more levels then 5: https://i.imgur.com/1sRJGH2.jpg It only shows level 5 1000/1000 "exp" in the menu screen: https://i.imgur.com/QC0qVuT.jpg