Tile Compositor

A few days ago i download from http://graphicall.org/ Blender 2.63.10 with tile branch.
I was trying the new compositor when i try to use the Defocus node to get some DOF.
The image look all defocused. Then i try the same blend file in Blender 2.63a and get the output as i expect.
Well look the image 1, thats from Blender 2.63.10
Image 2 is from Blender 2.63a

I think image 2 is correct.