Not sure if our complaint is identical, but I used Microsoft Launcher on a Razer Phone and it let me do stuff like change how many icons fit on a line in the dock and in the app list. I normally had 7 or 8 across. Now I'm using the duo, with a significantly wider screen, and it defaults to 4 and won't let me change it (yes I've fooled with display and font size on android which had no effect), the setting for this was in launcher previously.
Also wish If I had it open it would let me spread the Microsoft keyboard across both screens / pull an app over both screens. Maybe I just haven't found that yet.