"Constant Physical Size" does not render accurate size in Unity editor

I am trying to use "Constant Physical Size" for my UI scaler. I've tested it on three separate devices and it does indeed work - each device renders the UI elements exactly the same size. However, the editor is rendering my UI smaller than it should be. I assume this is because the Unity editor doesn't take into account my computer screen DPI - I have a retina MBP, and changing my monitors effective resolution does indeed change the size of the UI elements within the Unity game editor. This is really disappointing - I shouldn't need to change my monitor resolution just so I can use this feature effectively! Obviously, this makes it really frustrating to design my UI elements appropriately.

I am currently using Unity 2017.4 (LTS). Is this ever going to be fixed?