I waited for Larian to make a patch with this real problem
as a modder made a mod called "tidy skillbars" but this must be a patch every kind of consumable item auto fill your bottombar.

WHY Larian have to put this option under gameplay is everyone downloaded this mod because of this auto putting thingy. But problem is Modder had to modify object, item files by addbottom from YES to NO . As Many of other mods using this file will not work and most important every patch can break this thing too. Larian baby where are you smile . Why don't you see the Player needs. Mod cannot be a solution with this kind of problem. True repair will be an option for it.

Hope you will put in next patch and save players from corrupting their game files.