Zombies spawn and keep following me

[Horny Politican]

After doing a collecting a scanner in prypiat, zombies spawn but i bounce before they can attack me. From then on i have zombies spawn every time around me. I get a guide to a location, firefight start with the base guards fighting off zombie monolith. Traveling on foot to somewhere, my awareness meter pop red because a zombie spawned can see me over hills, buildings, and underground. No matter how many i kill after like 2 mins other pop other asking "why you run". Some how they got sniper accuracy and start shooting pop shots at me when i trying to get artifacts or fighting mutants or in a settlement. They seem to priority me out of other stalker shooting them right next to them.

[Kai]

Well, you triggered a zombie apocalypse bug.
Devs assume you'll kill those zombies in pripyat as soon as you encounter them, but you ran, which broke the script. They spawn elsewhere and you kill them, but it didn't count as clearing the script as it's not in Pripyat.