I first noticed this bug right after 1.16 released, when I was trying to exit the nether in a place I hadn't gone into before on my dedicated survival server. The result was that I ended up in an area made out of stone with no trees, no dirt, no ores, and no dirt. Structures were still generating, but shipwrecks were right next to villages, so I think that the game was confused on exactly where to generate things. As far as I know, this bug still persists, as I am not able to find any new chunks that are not made out of stone. Any help on how to fix this would be greatly appreciated.