T1198 form is still locked by CRA and not finalized yet CRA yet. Please refer to this link Why does TurboTax say my forms are locked or haven't been finalized?
We do not have any ETA on this yet but as soon a these forms gets finalize we will be updating them in TurboTax for an accurate calculations.
We are aware of this issue and our development team is working for a resolution. We appreciate your patience.
Thank you for choosing TurboTax.