No, that's not what I was saying. He literally loaded an older save than the one he wanted to load, so progression he had made wasn't there. It wasn't a bug.Yep, that happenned to me, i could not get the clue from Thaddeus because of that. A warning about old saves not being compatible could be useful.
Other than that, great game Belle. I love your namesake, and hope that we can learn the size spell later in the game.
You didn't run into a bug, either. You just ran out of patience. Thaddeus and his clue were always available to you, but you gave up too soon. He's not available every day.