VA State, filing jointly w/ spouse. TT allocates ALL joint Div/Int/CapGain income to me. There used to be an advantage to an even allocation. Is this NOT true?

For VIRGINIA state income tax, Turbo Tax Automatically allocates 100% of our joint income to me.  Virginia allows allocation between me and my spouse.  At one time an even allocation resulted in lower taxes.  But TT won't let me adjust the allocation to test whether it results in a lower tax or not.