Issue with pattern fill in photoshop

[Niki37412906sko3]

Hi, my pattern fill isn't working for one of the patterns I made. When I put it in pattern preview it looks fine but when I save the pattern to create a pattern fill it comes out chopped up. None of the other patterns I've made do this so I'm wondering how to save it so the pattern fill will come out like it's supposed to. 

[Myra Ferguson]

I'm wondering if the edge of the content that you're using to make the pattern has some opacity on the edges which could be the result of anti-aliasing if the content was scaled.