I ceased to reside in Canada in 2018, and was resident in Québec on the day I ceased to reside in Canada, therefore I need to file a Quebec tax return.
However, when declaring I am non-resident as of 31/12/2018 in the Turbotax tool, it does not allow me to file a provincial tax return. Only the federal one is generated. Why?
The question here becomes what province did you physically live in on Dec 31,2018, as well as departing date from Canada (which you answer right at the beginning of the tax return when you go through the residency information).
Also, keep in mind that since you are a non resident you will have to print and mail your tax return. You will not be able to Netfile with the CRA.