Fatshark removed Beastmen in city/town maps but it seems that they forgot about the Back to Ubersreik and Shadows over Bogenhafen DLCs.
Developer Update - May 8, 2020:
Removed the possibility of Beastmen spawning in most human settlements (like town areas).
Patch 3.0 - The Grail Knight - June 2020
- Convocation of Decay: Made sure there are no Beastmen and no zones with a mix of Skaven and Chaos.
- Righteous Stand: Removed Beastmen and reduced mixed Skaven and Chaos factions.
- Screaming Bell: Made sure there are no Beastmen and no zones with a mix of Skaven and Chaos.
-
Even if the Back to Ubersreik maps are supposed to be an illusion, the illusion still has to make sense. And Olesya only acknowledges the presence of the “Pactsworn” in the BtU maps. Beastmen were never part of the Skaven-Chaos Northmen pact.