CLient crashes at the end of the game

In the last to days, whenever i play, everytime the nexus goes down i get a black screen, with mous and cursor still visible and it doesn't reconnect until i manage to close the client. It is very annoying, i can't review stats, vote or report. I tried unistalling and reinstalling the entire game, tried with the ingame repair, nothing seems to work. Is anyone having the same problem?