Just one of the millions of glitches with the new client

im not sure if this is worthy of a board but im sure people will want to express their disappointment with the new client, anyway for the past few games i've been having a bug where after i win the game instead of going into the end game screen my client shrinks to like 2x3 inches and stays that way not letting open it any larger, or letting me click anything, the only solution i've found is restarting my computer because you cant close it without having to click yes when it says "are you sure you want to exit?"