Thanks for playing! To clear up some likely confusion, plain corpses aren’t considered decorations (since they didn’t feel enough like actual Halloween decorations to me; maybe I was being overly picky), you have to get more creative in how you dispatch people. The verb for mixing things is “mix” (“and”/“with”), but it requires the cauldron.
Thanks for pointing out the bug. A friend noticed it too. I think I know what’s causing it.