There is a bug that allows you to exceed the capacity limit of a backpack, bag... If, for example, you have any empty bag in your backpack that is occupying a 1x1 space and the backpack is at, for example, 26.5/27 of capacity (in terms of maximum weight) and we open the bag inside the backpack, we can put any item inside that bag even if it exceeds the maximum allowed weight of that backpack. This, together with the fact that the bags with items inside take up less space than the space inside of that same bag (for example, garbage bags with items inside occupy 3x3 but inside them I think it is 5x5), means that you can have bags inside bags inside bags... And have basically everything you want in a single bag plus "infinite" space