The wolfs teleport inside of blocks that are near the player. I do not think they teleport inside of specific blocks only.
I updated the graphics card drivers manually and it didn't help. I also reinstalled Java and that didn't help either. Can you please help, I want to be able to play on 1.12.2.
I have the same problem, reported it aswell!
Good Luck
It seems to only be worlds created in this pre-release, as loading up a 1.15.2 world or a 20w22a world in this pre-release causes the world to generate chunks normally. I rejoined both the 1.15.2 and 20w22a worlds multiple times and no chunks seemed to be cut off.