Please read to the end!     "Windows 10 "

Error with world generator

I don't know if it's a bug, but I think it's a bit wrong. Recently, I encountered a very strange thing in my hardcore world, I am walking through the desert biomes, I am walking ahead when I was suddenly surprised. Next to the desert biom, I encountered ice biom. I don't know if the generator had an error, but I think so. In my opinion, it's a bit illogical that desert biomes and ice biomes meet side by side. I would be glad if you could fix it. * I tried to speak in as much detail as I could, sorry for my broken language but I'm from Poland. *