This being WAI also makes no sense as it used to be a 4:1 scale of the world but is now completely different. In the current state, the world generation has parity with bedrock, but not within JAVA anymore. I am holding out hope that this will get fixed as it renders the world seed completely useless and forces me to either play without the setting or not at all.
This change really ruins the large biome setting and it being WAI is in my opinion really stupid.
I noticed the same problem. The setting "large biomes" no longer seem to give the same world but bigger for the same seed compared to a normal world.
If we take the seed 1854367407555292247 for example.
In a normal world at -2050 -600, one would be in the middle of a large swamp.
On the same seed with large biomes at -8200 -2400 (-2050x4 -600x4), one would end up in an ocean surrounded by dark forest.
Same issue here, reported with steps and everything.
The same applies to mycelium.
According to the wiki and some previous versions, grass should only decay if directly covered by any opaque block or if the covering block is transparent and the light level in that position is four or below. So grass covered by a single layer of water, should not decay if the light level is high enough, and the fact that it does decay anyway is the bug.
Ok, this appears to be a bug with optifine, so perhaps I shouldn't have brought it up here
I do, and testing again without it got rid of the problem. So apparently this issue is with optifine.
Redstone dust on top of glass or top slabs can not send a signal downwards even though it connects. It can however send a signal up. This is intended and not a bug.
I'm pretty sure the trades are random and that having the same booktrade twice is not a bug.
Villagers not losing their profession if they have been traded with is intended and thus not a bug.
What items were attempted to be smelted?
This is also a parity issue since you can make no comparisons between two worlds with the same seed.