Vermont Charitable contribution being mistakenly reduced by Federal charitable amount

Hi. It appears that Turbo Tax is mistakenly reducing the Vermont Charitable Contribution by the Federal contribution limit of $300 through a Charitable Contributions Smart Worksheet on the VT IN-111 form. I don't see this anywhere mentioned on the State of Vermont website Vermont Charitable Contribution Credit   so I assume this is a bug in Turbo Tax.   Is this correct? Thanks.