That’s intentional. What you’re actually getting is this: ┌─────┐ │ A1 │ ├─────┤ ┌─┐ │ A2 │ │B│ └─────┘ └─┘ It’s the same as if you were

That’s intentional. What you’re actually getting is this: ┌─────┐ │ A1 │ ├─────┤ ┌─┐ │ A2 │ │B│ └─────┘ └─┘ It’s the same as if you were to have an actual third monitor. You can reposition B in the Display settings so it looks like this: ┌─────┐ │ A1 │ ┌─┐ ├─────┤ │B│ │ A2 │ └─┘ └─────┘ That arrangement had been working for me, but I have to manually configure it. However, that’s no different from when I plug in a monitor with a mismatched resolution or DPI. It’s even the same as Sidecar. That being said, it’s been far from reliable, and Universal Control is both very late and very much unfinished. I’ve been experiencing different issues from the ones you mentioned, but they’ve been issues nonetheless.