Five months into New Jersey’s ban on plastic — and in grocery stores, paper — bags, it’s been, well, a mixed bag of results. Customers are still forgetting their bags at home. Some shoppers are even stealing hand baskets. And the real “glitch” in the law, according to a legislator who wrote it, is there’s no good solution for handling online grocery deliveries since the ban includes both paper and plastic. Online shoppers are ending up with stockpiles of reusable bags that they’re required to buy, or are being given, with every order. Among the solutions are suggestions to create a system for …