The grass in my world surrounding my buildings turned into a unknown block called tile.info_update.name and when I try to build on it It says you can’t build outside your world? But my world is “infinite” and is a super flat world also commands don’t work in the area as well. I can fly over it and mine it but I can’t place anything unless it is the same block. It’s been like this since the better together update and I don’t know the cause of it but I want to expand my building but I can’t because the block is surrounding my buildings. Before the update It was perfectly fine but when the update came it messed it up I think  it is because of the "bedrock" update and with that I don't have a concrete floor to know exactly the cause nor do I know how to fix it. I might just have to fix it manually. The other  picture is an earlier version of the world..... I’m now guessing   An update made the world like that