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

Damn. The settings still reset.

Damn. It's a mystery. I checked after the first report – the settings didn't reset.
And I checked again now – they still don't reset. That's why there's no corresponding fix in the new version. I just checked again.
I connected to HD, with HD and without HD, with Tournament Extensions enabled and disabled. It seems we're all doing something differently. I can't reproduce what's shown in the video. Unfortunately. Does this only happen with Jebus, or not? Is Jebus from the HD set, or not? Are you playing through GameRanger?