[Trexmaster]

Spam clicking through the dialogue given will cause this, like the OP said. Doing it in the initial set of dialogue when the battle is about to start will cause multiple Ashes to be spawned.



Then, when you complete the fight, and spam click through the dialogue produced from that, this happens.



Clicking through as fast as you can will reproduce this. In that picture, like in the OP, I can walk around freely and what not, and the only escape is reboot/a ban.

UPDATE: Relogging will get you out, who knew.