Are you trying to include a draft feature in your pattern? I've found this to be flaky at best. You may have to:
A) Perform the draft after your pattern. This will obviously increase the number of selections needed for the draft faces, but sometimes this is your only option.
B) Specify a pull direction that is based on geometry not affected by the pattern. Theoretically you're already doing this because you obviously can't specify a pull direction that doesn't exist before the pattern. Tough to describe, but I've seen weird things happen with patterns involving draft features.
C) Specify different options for your pattern (pattern faces rather than features, geometry pattern, etc.)
D) Build the feature(s) to be patterned as a separate body, pattern the body, and then perform a combine operation.
All of this is pretty vague, but without having more information on what you're trying to accomplish it's the best I can do.