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MC-139844

[18w47a] Corrupted/not playable snapshot & weird lag

Farming is not working and game spamming UUID warnings. Maybe, also mobs does lots lag.

What I expected to happen was...:
Playing survival.

What actually happened was...:
Extreme lag in the world, then i going to mine (At coords Y 12) and farming is not working (Plants do not grow). (Update: randomTickSpeed is not working)

Steps to Reproduce:
1. Create new world, should be created in snapshot 18w46a.
2. Play survival in new world.
3. Optimize world in snaphot 18w47a.
4. Then, play survival in the world and that lag starts happen. (snaphot 18w47a)

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migrated
[media][media]
Johnibur

Random tick issue is related to MC-139693. The UUID spam is mentioned in MC-138676 and for these snapshot, it's related to mobs being duplicated, see MC-138919.

likalaruku
migrated

I'm having a terrible time with 18w47a as well. Plants don't grow, saplings don't grow, dirt blocks inserted into tree trunks, sticks, apples, and saplings spewing forth from the occasional tree, severe lag, trees leaves don't disintegrate/fall, it's a mess. The first world I created in 47a I spawned in what was apparently a bamboo forest, but the bamboo wasn't properly growing, it was single blocks of bamboo randomly planted in the air, on the ground, and spawning/breaking off like I was chopping them down but a lot like the trees spitting out saplings/sticks/apples. It was a mess. I have since created several worlds with random seeds and they all don't work properly in 47a. I gave up and switched back to 1.13.2 to continue playing my previous world.

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Minecraft 18w46a, Minecraft 18w47a

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