Another instance of areas of builds being deleted and replaced by terrain.

Like a similar post, parts of land+ builds deleted and replaced. looks like a 9 x 13 area, and is seemingly random. continues underground, but depth/ height affected is unknown. all crops except beets shown are supposed to continue another 6 blocks out. the potatoes on the left weren't affected, and give a depth estimate. This seems to take out everything there regardless. I cant give much details on my version, but I hope the images help with this bug which seems to be harming many worlds. I have a suspicion it is spawn point/bed related, as all affected areas so far appear to be over buildings/ manipulated terrain. The green concrete in one of the pictures is the distance from far edge of land effected. the lengths are 12 blocks before turn, 15 after turn.