Mobs spawn but in such low numbers you have to hunt for 15+ mins in an unlit open field to find any hostile mobs. Fish and squids are also no longer spawning. In the picture attached the pond had 20+ squids spawning in it constantly, until server was updated to 1.13 pre3. I could walk away and come back and the squids would be repopulated. The server world was created in pre1 and mobs were spawning like normal until updated to pre3.
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[Mod] Neko
What version was this world created in? Also, what versions was this world upgraded to?
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The world was created in 1.13 pre1 and has been updated to every snapshot since then.
kumasasa
Is the mob spawn rate normal when you recreate the world in 1.13-pre5?
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By recreate do you mean update the server to pre5? If so then no it didnt affect anything.
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No, he means creating an entirely new world using the same seed as this world has.
kumasasa
Yes, that's what I meant.
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I never recreated the world, but I found a fix to increase mob rates. For some reason mobs don't like to spawn when the render distance is set to anything lower than 10 on the server. Once I set the render distance for the server at 10 mobs started spawning more often.