[Mac Client] Cannot reconnect (associated with another bug)

For some time now, the Mac client has had the following bug: "Do you want the application “LeagueofLegends.app” to accept incoming network connections?" dialog on game load. If you do not tab out of the client to approve the connection, it causes lag, slowdown of the game, and can cause the game to lock up.

This bug occurs on all new installs and old for me.

I disconnected from a game today and could not reconnect because I could not tab out to get to the approval button on the "Do you want the application “LeagueofLegends.app” to accept incoming network connections?" dialog.