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

I have a suspicion that he doesn't care at all how the ND mod behaves in conjunction with WoG. Well, of course, this isn't the official version, but my personal opinion.

And generally, the website says WoG 3.58, TE, WT, ERA - not all functionality is available.
So it's not surprising if something somewhere doesn't work or glitches