So my problem is that I have about 20 or so tier 5 spawners in a drop trap falling 50 blocks and spawn a verity of mobs, and it works perfectly whilst I'm in the area, but when I leave nothing spawns. So, the spawners are for sure loaded using a chicken chunks chunkloader (I've tried other loaders). I know the area is loaded because I've tested pumping items from one ended chest to another. Now the strange part is that they do work if no one is online. And I know for sure that they aren't despawning because of the distance or anything like that. Any help would be much appreciated.