HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

If a game error occurs (crash, freeze), it means that the processes leading to it are already disrupting the gameplay, as it leads to an incorrect termination of further use in the game, and its fix, paradoxically, is not a change in gameplay, but rather a necessary element for the game so that we can continue to use it.

Endless AI turn:
In HD, we can play the current situation; in the original, we absolutely cannot.
Verdict: a clear and significant change in gameplay (i.e., in this scenario, a person playing SoD, no matter how hard they try, cannot achieve the result that the HD player achieved).
Clone bug:
In HD, we can successfully cast Clone with the current stack arrangement; in the original, we absolutely cannot (glitches, crashes). Verdict: a clear and significant change in gameplay (i.e., in this scenario, a person playing SoD, no matter how hard they try, cannot achieve the result that the HD player achieved).
The fact that the game situations in which these bugs occur are very rare does not justify the change in gameplay.

However, the automatic fix for map errors is separated from gameplay bugs in 3.0 because:
1. The bug is not regular. That is, playing in HD gives the same result as if we were playing SoD and got lucky.
2. The game never continues after the bug.
3. In the original, the game rolls back, and if all players, the AI, and the randomizer repeat the exact same actions, we can continue playing and get a 100% identical HD result.

With all due respect, it is obvious that yourdestinity did not mean what was listed.

What did he mean?

Perhaps attention should have been paid to the introduction of a chess timer, which is a new feature in the game and not a bug fix.

The chess timer is a new feature in TE; it is not in HD. Why should we pay attention to it here?