Bobby doesn't correctly recognize world change from minigames servers and you end up with a mixed world (by example go in hypixel skyblock in the hub, explore it then come back to your Island and see that far chunks are actually the hub chunks)

This doesn't happen with Farsight or Hold That Chunk.

That's because, as far as the client is aware, those are actually one and the same world. There's no way to differentiate between them. See also #72.

The reason this doesn't happen with Farsight/HTC is because they don't preserve any chunks across world changes at all.

The world could be checked for the percentage of identical chunks to match world data, creating a new data set for each unique world.