Do I have to pay NY state taxes (as a non-resident alien, since I'm on an F-1 visa for less than 5 years) on my internship income and signing bonus for a job in Seattle?

Details:

• Grad school in NYC - not a US Citizen/Permanent Resident, in F-1 status for ~1.5 years by end of 2017
• Internship in Seattle, WA for 2.25 months (Summer 2017)
• Return job offer in Seattle, WA
• Signing Bonus paid ~October 2017, while I was in NYC
• Only withholding on my W-2 is Federal
• Sprintax suggests I should pay NY State taxes, although this seems wrong, since the income(s) were not sourced in NY state