The Mysterious Oak Log at (0,0,0)

This is probably one of the weirdest bugs I "found" so far. Interestingly the big youtuber mogswamp made a short about this oak log, because he found it years ago in his superflat world: https://www.youtube.com/shorts/7GhIPf40QHA
The short went viral with (currently) ~35 million views. Crazy.

Huge shoutouts to @tildejustin , who helped a lot with reading the code.
Link to his github: https://github.com/tildejustin


Link to the bug report, which covers the mysterious log: https://bugs.mojang.com/browse/MC-61610

Video credits to DylanDC14: https://www.youtube.com/@UCAh-MetMwF4RP0pkFuA_M3g
Ship on stronghold: https://www.youtube.com/watch?v=dH6yUkshQXQ&ab_channel=DylanDC14
bedrock at y-level 5: https://www.youtube.com/watch?v=VkDx36rUG5I&ab_channel=DylanDC14


Chapters
0:00 Intro
0:39 Generating The Log
2:57 Useful Applications
3:56 Outro