I'm not too sure, but it could be that in AgS the place where you spawn is not actually "spawn". It could have been moved in this map and there is even an in-game command (/jspawn I believe) to change it. Initially chunk loaders didn't even work when you were offline. I imagine Jaded first wanted to make this a SP type of game and maybe moved the spawn to avoid automatic chunkloading? I don't know, just speculating.Well, since I'd rather be building than researching, I just moved [am in the process of] my mushroom farm, crucible lava gen, and sludge processing, to the nether...when I noticed something. My spawn chunks are unloading? I didn't think that was possible. I looked into this about a month ago and there doesn't seem to be any real definitive information other than spawn chunks exist. Anyone have any info on this or is it something specific to AgS?
BTW only reason I knew is I cannibalized my chunkloader for a couple spot loaders and then had issues when I wasn't getting any water through my Tesseracts in the Nether. Dropped a spot loader at my Overworld water works and problem solved. Supposedly spawn chunks are 12x12 or 13x13 around spawn. My Overworld build is wholly contained within this area.