I taught an online class in a state that I don't live. Do I have to file taxes for that state?

[OutdoorsFun]

I lived in Georgia for all of 2016. I had a variety of jobs in Georgia. I also taught an online class for a university in Minnesota (the university has a physical presence in Minnesota, but not in Georgia). I never set foot in Minnesota for this job. There seems to be some back and forth on this and other forums about whether or not I am responsible for paying taxes to Minnesota. My accountant is telling me that I do need to pay taxes for Minnesota. However, this is the first year I've heard this. Is this new?

[Marketstar]

If you lived and worked in Georgia for the entire year (2016) you have no Minnesota income tax liability and are not required to file a return.