The new hotfix update has added a new dialogue option with Harmost allowing player to reveal to him that they fled the institute causing him to become furious and refuse to speak to you again.
Currently this does not affect the tchortists too much, with prevlic still repeating the line 'speak with Harmost' after talking with stavros.
I think it would make sense that tchortists would become hostile to the player if they return to the zone after leaving it, similarly how oligarch factions react if player gets hired somewhere else and talks to them.
