true, tested this.
it does not show the nexus. (shows a 0)

Also when display both with show in the beginning, the engine crashes.

using a smaller skycube as second skycube works and shows the nexus.

So probably the engine runs out of memeory.
(not displaying the nexus, as it runs over a limit i suppose)

Some small recent games of mine:
Griefer 4k http://damocles11.byethost9.com/griefer4k.html
Kobold 4k http://damocles11.byethost9.com/kobold.html
Cave 4k http://damocles11.byethost9.com/cave4k.html