Double accepting invite breaks the game (CLIENT)

Sometimes I get some double invites from the same person, and just for fun I accepted the second invite even though I was already in the lobby. This causes me to get booted to the main screen and an error message to occur about me being unable to join the lobby. Because of this, I can no longer accept invites until I reboot my client. Needed information, running the new client.

1. Have a friend invite you to a game several times, and then accept one of them
2. Once in the lobby, click the check mark next to the invite to the same lobby
3. Watch it crash