I don't owe any taxes in the state I live in, but I'm getting a refund in the state I work in. Did I do something wrong?

For the past two years, I've owed money to NJ but would get a refund from PA that typically cancels it out. This year, it looks like I don't owe NJ anything, but I'm still getting a refund from PA. Everything looks fine... do you think I missed something?