18:9 screens still show as 16:9 in the editor

So I'm surprised all my searchers in this have shown up nothing (sub reddit, Google and here).

Devices with 18:9 screens (such as the LG G6) still show the editing view in KLWP at 16:9. This makes positioning objects in the y axis difficult as they are later repositioned on the actual home screen. Isn't there some way we can edit in 18:9 too?