Yes it is listed. I actually even called CIC today to confirm if they would accept this as a form of re-entry and they confirmed they would. However the problem is not with them, its with Health Services and ArriveCan. The person I spoke with at CIC said that even though they would accept it, they cant confirm if ArriveCan/Health Services will. I have tried to check with them, unfortunately they are not very helpful. They asked me to select Citizenship Certificate as the option in ArriveCan, but no such option exists.
I am going to try and call back to see if I can speak with another person. But since we now have to complete an ArriveCan form before returning to Canada, they could prevent entry, even if CIC accepts the document.