Spirit workers potion can be dropped anywhere
A minor thing, but probably a bug nevertheless.
While usually workers are not allowed to be at arena or in prison, you can drop spirit workers potion anywhere, even inside said rooms, and they all will spawn there.
Game Version:
Steam Public
Platform:
Windows
After discussing this internally we don't feel it's a problem. It's silly but if players want to waste their temporary workers in there and it's not causing any strange technical hickups we think it's fine to let them.