I've had a bunch of runs where I will complete 20 waves and get zero tokens. It doesn't happen every time but will alternate where I get the tokens 1 run and then the next run I'll get zero. Is anyone else experiencing this? I'm close to the boss when he gets killed so can't understand why I get nothing. Is this a bug? I noticed that when in the event map it doesn't show you how many tokens drop and when. This would be helpful.