I have just started experimenting with alchemy and my character is at level 55 . But I have noticed that when I steal alchemy ingredients from shops or even the arch mages room that I own they don't respawn after a week so far. I heard it's supposed to be 48 hours. so is anyone else getting this happening to them?

Are you talking about plants or ingredients that are left out in the world?

Yes all the alchemy ingredients you find lying on shelves. I'm plaything on the xbox as well.and I had this happen a few days before the latest patch and still now after getting the new patch. As I said I've had the game since the day it got released but just a few days ago decided to try out the alchemy perk tree.