On the planet connected to the home planet via the teleport system, the starting base appears too close to the neutronium. This caused the teleporter transmitter on that planet not to spawn. There are also some interesting worldgen things going on at the homeworld too, a giant vacum hole and many abyssalite breaks run through the map due to buildings spawning on top of the seam.
Generate a world using the seed FRST-C-1567048949-SL3 in Build:U35-479045-5. Travel through the teleporter transmitter on the homeworld. The destination planet will not have the paired teleporter transmitter, leaving the dupes stranded.