When I can chose at the start of turn between e.g. Village Green and Crypt, the order is changed. That is confusing. It shows Copper first in the "preview" and then it switches the order to trick me into chosing the Silver. That is unethical!
It also happens with more cards in Crypt.
The "preview" in the button is just to give you an informed opinion about what cards you can expect to choose from that Crypt for making other choices. As you yourself noted, counting on the position of the Treasures as presented when you finally choose that start of turn effect is ill-advised.
It is misleading. Why not have the same sorting for both? Why make it extra hard for the player? Lets hope the new UI fixes it...