401k deduction aren't subtracted from the state wages

We moved from NJ (Jan-Sep) to CA (Sep-).

In my case the reported W-2 wages for each state subtract the 401k deductions (D-box 12, 401k) from the Gross Wages/Pay.

However in my wife's W2, the sum of box 16 for NJ and CA is actually a few hundred dollars more than the Gross Wages, however the box 1 (total W2 wages) = gross wages - 401k deductions+group term life.

So it appears that her employer didn't subtracts the 401k deductions when paying the state taxes.

Does this look like a mistake?

 

thank you in advance.