That's where you have to pay attention to how they are laying the fabric out and cutting it. Too many of use are so busy multi tasking that we don't pay attention. I'm guilty of that too sometimes. I try to better in stores where I've had issues or don't know or Walmarts where you never know who is coming to cut the fabric. I've also found that some of the precut fat 1/4 are the same way so I unfold them to check if they are square. It's my money so I need to protect it and if they have to refold it then they should have been more careful in the past. I only check in stores where the fat 1/4 weren't right. We have a LQS here that no longer cuts fat 1/4 or 1/8 pieces. They have some precut but they sell alot of apparell fabric so they stopped cutting them; only 1/4 or 1/8 WOF there.