The catch is in how the mod itself implements the planning part - it does so by changing the force the ghost entities belong to, so your own force bots will not try to construct them. The whole mod is one big (and original - kudos to the original author :D ) misuse of the Factorio modding API.
It's really not a tug of war - it's more that the space platform should really not try to construct any ghosts that belong to another force, similar to what the bots are doing. I just assume that nobody at Wube thought to test this particular scenario - not sure if in vanilla game you can end-up placing entities on another team's platform.
I have created a bug report for the devs here, so we'll see how they reply:
Best regards,
Branko
P.S.
As a side-note, the original mod author has picked up development again, and is trying to implement planning functionality using a new approach - might be worth it to at least keep track of that one as well to see where it goes - there will be some gotchas with that approach too.