My cosmic-randr list is displaying a third display which isn't connected to the PC and doesn't show up on the normal Gnome Cosmic version of the installation. It is also being shown within the cosmic settings because of this.

There are 2 physical displays connected, which show up correctly and work fine. This however causes the mouse to just vanish when going offscreen to where Cosmic thinks the third display is.

❯ cosmic-randr list
Unknown-1 (enabled)
  Model:
  Physical Size: 270 x 203 mm
  Position: 5503,984
  Scale: 100%
  Transform: normal
  Modes:
     1024x768 @  59.999 Hz (current) (preferred)