This is an idea for QoL, especially now when there is a goblin event, so that items such as a bag of treasures or potions of the same type are under one icon.
For example, Elixir of Advantage II x2 or goblin treasure bag x 4 and summon boss material Malignant Heart x 8.
On the other hand, this can be solved in a different way, by picking up one thing where there are several items lying around, which would collect all of them in a certain area at once.