With a hero, this is unfortunately a feature, but with neutral creatures, it was tested and everything worked.
What map and what other mods?
Regarding neutral creatures, I'm still not sure, as I didn't see what was on the other side of the passage (there's a possibility that a hero was standing there). The map was made in the map editor, played in multiplayer, and no other mods or map mods were used. The map was processed through nhf_ms 0.9.
Another question: how playable is the mod in single-player now? Because I remember that not everything worked before.