photoshop pattern fill preview doesn't align with result

[Ozce25283530k5w0]

In what I think is already a pretty unintuitive way to make patterns, the preview window is vitally important in adjusting a pattern before filling a surface with that pattern. As you can see in the video, the two don't correlate, besides for some reason filling with a smaller version of the original pattern.

https://imgur.com/1NxjVzW 

I upload this in frustration because I wish I hadn't given it a chance, but maybe this will help a person in the future.

[Myra Ferguson]

Does it work better if you use View > Pattern Preview and the Edit > Define Pattern... instead of the Brick Script?

[Ozce25283530k5w0]

I may try later, but I already redid all of it in a different software - So there's no more need really. I still don't think it should matter, the software should behave properly no matter what route you take.