Eh, it turns out you don't need to press attack, you can just scroll over them normally

It works at unlimited distances. It's also why you have permanent target lock if the Demigod disappears into FOW unless it teleports.

No, you're still considered to be targeting them. If it didn't, I'd question the sanity of their implementation of teleportation, because it'd kill their demi just to spawn a new one elsewhere. Transferring all the stats would be a nightmare and for no reason.

Thank goodness for small blessings. I think that the move order must be ended specifically, because there aren't many good implementations where it'd automatically be dispelled because their pointer to the enemy would be rendered null, but the others especially need to be cancelled at the attacker level (talking computer code wise, not gameplay, don't get confused), so it is most likely a matter of adding checks to all the abilities. If I'm right in my baseless speculation, then it makes perfect sense to not implement that level of polish until you're sure that that ability is going to stay in that implementation.