@vartech seems to have added the income to 2019 tax return. The employer has returned the excess but withheld the taxes now, in 2020. The question seems to be ... how is this to be handled?
BTW, in my case, I checked the box stating "Do not withhold" federal or state taxes ... haven't seen the check yet but hopefully, it is of the full amount as I have already paid the taxes as income in 2019, else I will be in the same boat at vartech.
