Some of these may have been covered individually....

• Post world generation - mountains continue to form, primarily in unexplored chunks. What was even more freaky was that 2 chunks way from my new base (unexplored) was a Pillage Outpost, now there is a huge mountain. I have even dug through the new mountain to see if the outpost might have still existed inside, not so.

• This may also include complete change of terrain and biome, leaving leaves and part of trees hanging in midair.

• Water and lave pillars randomly generating in midair, at random heights. Including in explored chunks and in the same active game. Was exploring/mining down at -55, came back up to the surface and these things are everywhere.