This is exactly what I have.  Resident of PA, working in NY.  Got 1099 from a third party sick pay provider and when I asked my client what it was for FMLA.  Has anyone gotten any answers from PA as to whether it is taxable?  

***** EDITED BECAUSE I GOT AN ANSWER******

According to PA....it is definitely taxable if it is part of the NY Family Medical Leave.  They have specifically addressed that.