Got stuck on pre-turn. No moves left and end turn button does nothing.

I had a queen with 5 moves and Moon and Death cards which I moved around killing pieces until I accidentally killed one with a Justice card. Then the game got stuck. Animations are still playing but I have no pieces with moves and the end turn button is broken. It still has clicking animation but nothing happens.
EDIT: It happened again. I killed a pawn with Justice with a piece that would have had moves left.
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Also, the game gets increasingly more sluggish the further you progress.
It's a nice game idea but I'd like some kind of a goal like in Coup Ahoo. Something to work towards. I think some mechanism which made you lose pieces randomly (for example sacrifice events could pick a random piece) would be nice because once you get 9 queens the game offers no challenge whatsoever.