Minecraft 1.42
Simple Server RC1

Hi,

i am have used simple server on a previous version.
When i created an area with no build permissions and i try to destoy a blog, it dissapears for a second and came back.

Now with RC 1, the block dissapears in client and did not return. Also if i place a block it is locally still there and i can walk on it until i get kicked because flying is disabled. When i logout an in again all changes are undone.

Ich think there is a problem betwen the client and the server. The server is not sending an update to the client that the block is still there. I have testet it with an other player. I stand there about 10 minutes my blocks stay there and the other can walk trough them because he cant see them.

The Problem is, people can destroy walls and look behind them, they can not walk trough because collision is still okay. Or if they are fast enough, they can build stairs over walls befor they get kicked.