Wierd datapack bug (read desc)

So i was playing on my survival world with the following datapacks,

https://modrinth.com/mod/unstable-generation

https://modrinth.com/datapack/coconite-no-lunge-hunger

https://modrinth.com/datapack/unlimited-trading

And fsr wheni enterd the nether i could place water and all the creatures are zombiefid like it was te overworld and the portal that generated in the nether was a 5x5 fsr

I need help!