client(?) black screen

i started looking for an aram game.... i found one and click to accept it... the screen went black... i could do nothing of notice, i took a prt scrn attached... i have not tried to recreate this yet, i will prob try to get another game in a sec though and will update/edit if it occurs again

edit: i have to wait some minutes because i had to close the game out from the black screen bug....bsb i was able to join a game after the timer went down