The "Objective Completed!" window (https://i.imgur.com/72xoF6i.png) fills up the center of the screen, which is fine outside of combat, but very frustrating when it happens during fights.

I think it would be a good quality of life change to have it pop-up as a tab on the right or left side of the screen, that you can then maximize after the combat has ended, and choose your reward in peace.