The game's actually broken now
No champions are spawning in the first minion wave, afterwards you can only place 1 champion on the board, then the AI is broken at the end of preparation and no champions/minions will move.
Then I tried to play and it just gave me a crash error that wasn't bugsplat, it was a windows crash error.
EDIT: Now my client is just stuck on the friendslist and black screen, I can't get into a game or access the store/crafting.
EDIT 2: Relogging causes you to reconnect, on which your board will be backwards.
EDIT 3: Even after every single player leaves you are trapped unable to do anything until the game concludes, eventually I was able to surrender and everything appears to be fixed. I will try to play again to see what happens.