MC-311 - If you put an anvil ( or a few other items) into a display case and turn it upside down then the orange from the case will start to overlay the item in the case
MC-1132 - Netherportals create a huge lag, especially when serveral entities have to be teleported
MC-1136 - Enderpearls (and other throwable objects) loose their link to the thrower when reloaded
MC-1162 - When you jump on wheat crops usually the farmland become dirt, then seeds and wheat be dropped. However if you jump on potatoes and carrots crops farmland become dirt, but crops stay there.
MC-1181 - SkullOwner lost when breaking a player skull block