Please offer some advice.

I need help again. The question is similar to the previous one. There is a town (Haven). In the map properties, in the "Events" tab, everything is clear; there are no calendar events, trigger events, or other types of events. However, Leprechauns and Fairies regularly spawn in the town. I would really like to understand why. In the "Events" of the town itself, there is also nothing, and they are no different from other towns. What makes these units appear there?!