Crippling Realm of Damnation CR bug

Realm of Damnation has its CR set to 0 which means only rarely anything drops at all and if, then only <20 gold and normal gear with magic being incredibly rare and rare or legendary gear never dropping at all.

I just beat The Butcher and it did not drop anything at all, just like the last 2-3 uniques and last 6 elites before it.