Villi do not always heal to the extent that lactose can be tolerated. Mine never have. Maltodextrine is a wheat product most of the time, however corn maltodextrine is a corn product and is safe for those who can not consume gluten.
What is maltodextrin?
Maltodextrin is a food additive that is produced from a grain starch. In the United States...
Because you noticed the problems at home after you ate enough gluten to cause a reaction in your system, you did not eat enough gluten in Italy to cause that reaction. Also you are here for 99.9999 percent of the time, so do the math.
It takes a full 2 years for the damage that a serious gluten issue can cause to heal. You will still be finding things in them that contain gluten for at least another year on average. I found lactose in my allergy pills recently. Remember that maltodextrine is made from wheat, so always look for corn maltodextrine which is ok.