People are saying it could be that they forgot to delete the old layers, but the hidden text is smaller. Also, why are parts missing? If someone had "Congratulations to President Trump" and had to switch it to "Congratulations to Joe Biden", why wouldn't we see the Congratulations part? The digital artist would have had to have every word as a separate layer, which just doesn't make sense. It's 100 times easier to just open a new image or make a new text object.