Adventure map, an AI hero moves adjacent to a wandering troop of Mutant Zombies without an attack being initiated when it should

[LeHerosInconnu]

Preliminary checks

• [X] I've checked that there aren't other open issues on the same topic.
• [X] I've checked that this issue is reproducible on the latest snapshot build.

Platform

Windows

Describe the bug

In fheroes2, an AI hero moves adjacent to a wandering troop of Mutant Zombies without an attack being initiated when it should.

In original game:

In fheroes2:

https://user-images.githubusercontent.com/43583994/136056823-4e76d0a9-956f-4516-bdf5-ffc96370dd5f.mp4

End the turn.

Save file

Here is the save file: Dominion_0041.zip

Additional info

Version 0.9.7 4306

[oleg-derevenetz]

That's because cell with the hero is not accessible directly/diagonally from the cell occupied by Zombies in fheroes2:

and Zombies naturally cannot attack the cell that is not accessible by them. Looks like another passability issue/difference.