Taxable Refunds

I'm filing my '17 and '18 taxes concurrently.  My '17 taxes resulted in taxable state and local refunds; however, since the '17's weren't filed before the '18 return, the refund has not been received and I've not received a 1099-G for the refund.  My '18 return wants to treat the '17 refunds as taxable.  It doesn't seem like I should be recognizing the refunds as income until I receive a 1099-G (likely in '19).