in v3.3.0 of shattered pixel dungeon

In v3.3.0 of shattered pixel dungeon there is a new randomised badge.

How can I even play randomised?

I've tried the randomise button, which does select a different and random character but you then just play a "normal" game with that character with no new gameplay.

Anyone figured this out, I presume it's an initial bug.

Thanks.