Updated to version 195 and noticed that items seem to be getting stuck in the pipes.

Breaking the pipes does not seem to fix it but the items do not drop so it looks like a graphics bug.

Here is a small vid of the bug
http://youtu.be/hWUdZQEpgG4

Reconnecting should fix that. It's a server/client sync bug.

Have tried reconnecting and restarting the server with no chance in the glitch and other players are also reporting it. Have also tried other servers and have had the same problem. It is not happening in a single player world.

I think I know what is causing this. Will check it as soon as I can.