Champion select bug

When i want to play ranked the timers for picking a champ hit "0" , after that everyone on my team leaves the chat , i'm the only one left. The timer stays on "0" as long as my client is up ... soo i have to close my client and relog , but then i need to wait 5 min - 30 min to play again . I play this on a mac , anyone that can help?
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