Maryland State generously pays money into 529 plans for eligible students and families. If you get this state contribution then you cannot take a state tax deduction for personal contributions to 529s.
However TT State 2019 asks how much you contributed to 529s and then reduces my Maryland State tax liability even though you can't get a deduction for the personal contribution. It does ask you how much the state contributed so it definitely knows about the state contribution (and then for some reason also increases the state refund).
This all seems incorrect behavior to me.
