new client got stuck

[CLIENT] Agree to a game causes the client to stuck

when I open a game on the new client, Sometimes After i press "ACCEPT!" The game is stuck as if looking for more players, The computer is not affected but the game just does not work, if i close the client I get low priority search as if I left a match.

I do not know what causes it, and it rarely happens to me. one time after i clicked on the screen many times, The game started with Random "summoners spells" and champion i guess the game stuck only visualy but my clicks were accepted as if i were in a champion select

My operating system is Windows 10 and the computer matches the game requirements.