RimWorld

RimWorld

Vanilla Factions Expanded - Deserters
Travelling into orbit, then initiating a Plot mission, will cause the next plot mission to break
It seems like the destination of the next plot mission is based on where you accepting the previous plot mission. If you accept and complete one planet-side, then hop into orbit and accept+complete the next one, then the one after that will bug out, displaying no rewards, and no opportunity to accept the mission at all, essentially soft-locking you out of the Deserters ending.