HoMM3 HD bug reports.

Unusual behavior of heroes during the opponent's turn. They disappear and vanish from the map. Everything returns to normal during my turn. It's not critical, but it's unpleasant and unclear why this happens.

A similar problem, but worse. All heroes disappear, including those controlled by players and the AI. If you select a hero, they reappear, but if you enter a Castle, for example, they disappear again. You can even place two heroes in the same location. At the same time, you can't attack an AI-controlled hero because they are invisible. During the AI's turn, their heroes appear, and during my turn, they disappear again.
This has happened to another player playing with me online, but then only one player disappeared and reappeared, so I didn't pay much attention to it.
Version HD - 3.672, with SuperFix_Common and SuperPack_Rus installed (one has 1.1, the other has 1.4).
I'm attaching three files: my autosave, the opponent's autosave (which seems to be normal), and my save with the bug (unfortunately, not at the beginning of the turn, but you can still check the bugs I described).
I have no idea what causes this. If it happens again, I'll make another save