Artefacts not unlocking properly
I got to level 5 with Colossals. I unlocked Baz' Lucky Tooth. However, it's not showing up in the Artefacts list of my inventory. I did somehow manage to make it show ONCE, but as I was dealing with another bug at the time where touching a stuck doctor in my research lab would instantly crash the game I didn't actually get to set the tooth down anywhere, and now it's not showing up anymore.
There are a lot of weird things going on with artefacts in general. One time, when reloading a save, I just couldn't see any of them anymore. Another, they were shown as "available" even though I had placed them in the hospital already, etc, etc...
There's clearly something wrong going on here.