My suggestion is simple: at the moment when you close the bag and reopen it, the bar scroll at the top of it. That's quite annoying if you have to do more then an action, like trading items (often you do that 5 by time), use berries, use potions during grind, or in battle too, you have to scroll all the bag to get where you was 2 second before.
So my suggestion is to make bag "remember" where you was looking and when you open it again you will be at the same point as you was before.
Just like the Pokedex is. The pokedex work this way, and it's perfect.
However, I don't know if there is some code problem, maybe that's the reason bag is this way, in that case never mind. :Grin: