Water not building up in obstacle

I am new to blender, so forgive me if I make any mistakes explaining.
I have a cup sitting on a plane. Both are set to be obstacles in my fluid simulation. I have water pouring in the cup straight down. The issue is that the water does not collect inside the cup, it is just a stream of water looking like it disappears straight into the bottom of the cup. Is this supposed to happen, and is there a setting I can toggle to change this?

Difficult to give any answer without actually seeing what you have and there are too many things that can affect the result.

Post your blend file to http://www.pasteall.org/blend/ and tell us what the url is

Never mind, it must have been a baking error. I re-baked it, and it turned out fine.