Broken worlds/ locate commands?

Hi! English isnt my native so im sorry if i typed something wrong. Im using fabric loader on screenshots but ive found that bug before installed fabric for that version. Ive updated my world to 1.21.4 from 1.21.3 and decided to check if there a new biome near my city. I used locate biome command and it found biome in +-1000 blocks from my base. But ive chacked everything there before... When i arrived at the coordinates i realised that im in regular dark forest, ive been there. Even have nether portal to that place. So... Minecraft thinks im in pale garden but its just dark forest. F3 menu also saying that im in dark forest. Ive created new world with same seed as mine and there is pale garden in that dark forest. When i move in that part of biome and using command again it saying different coordinates every time. Coordinates of my position instead of biome location. Looks like minecraft thinks that my world is brand new with pale garden. Weird that it saying something like that about already generated biome in older versions. Havent played that world with world gen mods or snapshots. Seed if needed: 5860977247329682784