Issue still present in 23w45a.
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Since updating to 19w02a, my world, which was also started in 1.13, seems to have no mobs spawning in the overworld apart from those spawned by spawners or part of structures. This doesn't seem to effect phantom or passive mob spawning however.
This also affects 18w47b, and seems to relate to MC-139694.
Using F3+I on the chests gives:
/setblock 1623 50 21333 minecraft:chest[facing=north,type=single,waterlogged=true]{metadata:"chest",mirror:"NONE",ignoreEntities:1b,powered:0b,
seed:0L,author:"LadyAgnes",rotation:"NONE",posX:0,mode:"DATA",posY:1,sizeX:0,posZ:0,
integrity:1.0f,showair:0b,name:"",sizeY:0,sizeZ:0,showboundingbox:1b
}
It seems as though the game is placing the chest but retaining the structure block nbt.
Possibly relates to MC-19690 ?
Though as far as i know this has been happening in one way or another for a very long time.
That appears to be happening where nether ravines meet lava pools/lakes. The blocks are removed but the lava remains.
That would be expected, as it happens when you remove any block underwater.
Guardians are spawning just fine in 1.13 pre-1 for me, so it seems this bug doesn't affect everyone.
They were spawning all throughout the monument, so basically y=63 to the ocean floor. I linked a download of my survival world so you can look for yourself, the ocean monument is at x:-2329 z:887
http://www.mediafire.com/file/aua1mpaq1862zyv/18w07a_Test_Survival.zip
It could have something to do with ocean monuments only spawning in deep oceans now. Although i have a world i started in 18w07a and have been playing in through the snapshots and the ocean monuments in it are still generating and spawning gaurdians.
This seems to start in the same snapshot that removed flowing_water and flowing_lava
Flying in creative mode or with an elytra?
The affected version should be 18w10d but i repeatedly got an error saying 18w10d is not a valid version, so that field needs to be corrected.
I tested it yesterday, zombies holding any item, whether they spawn with it or not, drop the item 100% of the time when turning into a Drown.
This can be used to get the item a zombie is holding with 100% certainty it will drop it.
see MC-127291
I believe with the new mechanic of becoming Drowneds they are no longer meant to swim.
This appeared in the same snapshot that made Phantoms burn.
Still present in 1.20.2.
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