Whater can be placed into cauldrons in the Nether!

The Nether is the hottest place in Minecrat, in fact you cannot place water in it, because it will evaporate. 

But why, why can you place water in cauldrons? This doesn't make any sense!

Explaining how i did the bug

1) I went to the Nether with a portal.

2) I placed a cauldron.

3) I clicked it with a water bucket in my hand (It also work with water battle).

4) Done, we now have water into the Nether!

--I'm italian, sorry for bad english –