The water disappears after pouring out of the bucket

[Kopyt]

As in the subject, after pouring on the ground, the water disappears. It is true that I did not play too long, but before 1.2 the water poured down stayed in it. 
Now I can't build a farm. 
Is it going to remedy it somehow?

[Thorfinn]

What happened was you either selected a game mode that disabled transferring source blocks via buckets, or you clicked to remove that ability.

You can still create farms, you just have to go about them a little differently. Someone will be along shortly to tell you the command. I like the change, so I don't know that command off-hand. If you are too impatient to wait, you could go into creative and give yourself a water source block and place as many as you like then switch back.

[Kopyt]

Thank you for directing what to look for
/worldconfig noLiquidSourceTransport False