I mean what did you expect?
Something that is designed, and doesn't require extensive maintenance. That's what I want, not expect. Larian for some reason is incapable or unwilling to have good UI - be it party controls, inventory or hotbar, they seem to be recreating problems that games solved in the 90s.
K&M has a similar problem, though drop down menus alleviate the problem. Hotbar remains a mess, requiring extensive customisation AND refusing to remember player's choices. As far as I have seen controller UI has hotbar only, in form of multiple radial menus with no sense or reason.