Is this still a current bug?
We bought a year's subscription last Christmas, and ran into this problem in January.
Was loving the tutorials, but the kid put modding on hold because he really just wants to make mods about pets.
Now it's May and he's trying again, but we still can't spawn anything into the simulator.
We're trying with both "Create a new NPC" and by having a drone that spawns mobs. In both cases, nothing appears.
We also tested with world lightning, trying to make it hit the mob so we could check if it spawned but was invisible. Not only did it not work, but lightning also didn't work when we targeted ourselves.
Is this caused by an ongoing bug, or are we doing something wrong?