If you go to the world border in 1.18 Pre-release 1 with a render distance higher than 12
The server will take forever to process a single tick. Making seem almost as if its freezing.
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This happens due to:
ChunkMap::scheduleattempting to get a chunk that cannot be created due to being outside of the world border. The game then attempts to upgrade that chunk, which leads to multiple issue. The main one is that it attempts to load the chunks next to this chunk, which is also outside of the world border. It's bad but can easily be fixed by having a check either in `ChunkMap::schedule` to prevent chunks beyond: 1875010 (wb chunk + 12) or change the invalid chunk position to not load these chunks to begin with
Don't mark my bug reports as Cannot reproduce
Steps to reproduce in 1.18 pre-release 4:
1. Create a superflat world
2. Run `/tp 29999983 4.00 29999983`
3. Put your render distance to 20
4. Place a piston down next to a clock