The bug
Found a soul speed book inside a mineshaft chest, when they were supposed to be obtained only by bartering with the piglins as mentioned on https://www.minecraft.net/en-us/article/minecraft-snapshot-20w11a
How to reproduce
Seed: 8736251018805092639
Coordinates: /execute in minecraft:overworld run tp @s -107.70 33.00 -289.25 240.15 18.90
kingbdogz
Fishing might be affected as well then?