Note that there are two issues here.
One is whether you can lose track of a card when you are supposed to shuffle that single card. As I've said, it doesn't really matter if you did or didn't shuffle, because in any case the card didn't move, so it wasn't lost track of. (Also note that whether you have stashes, or all your cards have the same name, has absolutely no bearing on this because if you move the top card it's lost track of no matter what.) You could make a poll about whether what I said now is correct or not, but that's a different poll.
The other issue is whether the average player will think that they shuffled and therefore conclude that the card is lost track of. Donald might base his ruling entirely on this, who knows. (Although, the Dark Ages rulebook, as far as I know the only printed version of the lose-track rule, doesn't mention shuffling at all.) I would think that this forum is not really representative of the average player, so I don't see much use of this poll here.