Yep. This is a campaign killer, and it’s ruined me as well.
I’ve started a thread on this elsewhere:
It originally was triggered for an NJ loyalty quest, but I finally got through by using older saves and recompleting the mission. But now it happens just reloading savegames in geoscape. It’s a campaign killer, and I don’t want to go back 3-4 missions on the hope it won’t re-trigger a third time.