• killing a enderman causes it to drop a endermite that is not realy there its a ghost AI and you can kill it or move it its stuck there

• breaking tall grass like 2 block high grass drops untextured seeds and gives you the tall grass block

• in mutiplayer there is no sound with breaking or placeing blocks and killing mobs

-when you go to sleep in mutiplayer it becomes day for the other players but for you it is still night so you have to relog