Missing piece(s) from the new client

Hi there, i downloaded the new client but i immediatly met quite a unique problem. As soon as the log in screen pops on i can't click ANYWHERE on the screen other than the "username/password" area, or the whole right side of the client disappears. When i log in the same happens, and i can't view the right side of the client at all. This applies to pre-game room too, making it impossible for me to see enemy picks/bans or even to change masteries.