After updating my world hosted online from 1.14 to 1.16 (not realm, bedrock hosted server), upon joining the world the whole area of spawn had no visible blocks save for animals and created structures (unfortunately have no screenshots of that). After a few minutes, the world loaded, but the savannah biome in which the players were saved loaded with plains textures. Items etc. were not affected. Upon travelling to check other areas, it was found that many chunks have loaded incorrectly (chunks previously loaded in the lower version). The glitched chunks are full of stone and border regular chunks.

SEED -1418258754

STEPS TO RECREATE Was unable to recreate the bug by using the seed in a new world, everything loads fine. Unsure how to recreate.

Find attached several screenshots showing bugged terrain generation. A way to fix the glitched areas or to reset the map to how it was previously will be appreciated. Unfortunately there were no backups.