While in battle, I can't scroll over my scrolls and battle potions. I only can see the first items in the list.

Yes I do. I have this problem since weeks now. I am on mobile Chrome/Android. Clearing cache was not useful to solve this problem. While I am battling, I can't see my whole lists of scrolls and potions/shards, because the scroll function does not work. The scroll buttons are light grey right now and not moving.