Cursed

A reasonable answer is that if this isn't happening only to me, and the same situation with the same result has been described multiple times in the thread, then maybe there's something strange about the map (I'm not a programmer and don't know how other applications or, for example, Windows itself, might affect these maps). I'm not using any mods, maps, or old saves; I'm playing version 3.1. As an example, I can speculate and suggest that visiting or not visiting something, the number of days in a scripted location, perhaps some artifacts, the type of movement, etc., might be able to influence the script's execution. Not long ago, I was playing on a map where scripted Druids were getting stuck, but not for everyone and not always (even for me, sometimes they got stuck, and sometimes they didn't) - the author fixed the script, and everything became correct. Or, for example, maybe after completing the Remix, the author made corrections, and this script was affected.

Added 1 hour 45 minutes ago
Oh, and when I replied, I went through all the possible options again to ensure the experiment was clean. I didn't try it on a new profile. I made sure there were no saves or maps. An old save (before the battle) after the battle gives the same result. If this is some kind of external influence, then theoretically, everything should have been fixed, like, for example, in the situation "why do my Knights look like Demons and attack like Dragons," or some crashes and freezes (usually, simply deleting the map/mod helps, but sometimes the information is stuck somewhere, maybe in deleted saves, and it's fixed by creating a new profile). Nothing helps here.