Any glitches??

Hi.
Recently in Minecraft i have been having glitches and one especially creepy: I typed in /(division stymbol)/rgm with the mobs HALTED.
Also when you put a zombie in a mincart, then pour water next to it, the zombie floats out!?!?!
There are many glitches in minecraft, and if you have any more, then please write them in the comments bar below.
They are working on all the bugs and glitches that the producers are fixing and they are very useful in maps, etc.
Yours ehuls3