I'm experiencing a bug that began in about year 10 or 11 ish, where after each and every invasion, at least one member would remain and wreck havoc on the campus, even if it was a 100% completely successful defence. At the moment I have four invaders who haven't left, three wizards and one archaeologist. I've somehow managed to cause two of the wizards to stop moving after editing a room whilst they were casting the pumpkin head spell, and I just noticed the third wizard, so haven't tried replicating this "fix". The Archaeologist won't stop moving no matter what I do and keeps destroying things. This has made it exceptionally difficult to get the second star of TPU, and although it shouldn't be a huge issue to get Star 3, it's still annoying.

Hi Roth2000,

Sorry about this! 

This is a known issue that we are currently investigating.

Can you tell me which platform you are on?

Thanks,

Chizel 

Hey Chizel,

It's on PC. Hope this information is helpful to figure it out!