I have to agree, the inventory organization is quite awful. You can't sort items, when you sell things you get holes after that if you chose ALL view. Other than bugs I think this is very important to not allow this chaos into release. Inventory is a mess right now even though it's beta already.
Couldn't agree more - there are a bunch of (mostly) simple improvements to the inventory and trading menus in particular that are listed as requests in the "UI Wishlist" thread (like inventory sorting, key rings, tagging items as "junk" for easy resale, etc.). I just hope Larian has time to implement them before June 20.