Actually don't know if to call this a bug, an overlooked feature, an irrelevant feature, or maybe this is simply deliberate.

When certain objects spawn in my game, I want them to be invisible to everyone - both to spawned players and to players that might join and spawn in the future. I used to acheive this using CheckObjectVisibility like in the second image, but with 1.5.1 there is an issue with this method.

After updating to NGO 1.5.1, when I'm using NetworkShow on an object, I get the error in the first image.
I am using CheckObjectVisibility like in the second image so that objects are only visible to themselves by default.
So I think the error is caused because there is a conflict between NetworkShow and CheckObjectVisiblity.
All of this was not present with the prior versions of NGO.

So I tried using "SpawnWithObservers = false" instead.
But the thing is that if I set SpawnWithObservers to false on an object, it is only invisible to players that are already spawned. So if a new player spawns after that specific object has been spawned, that player would be able to see it. So SpawnWithObservers is actually useless to me in 90% of scenarios.

Sorry for not using the template, felt like I can't fit the issue into it well.