I have flown hours from boats, sometimes even in motion without any problem until now. It could be defective unit, it could be some unexpected mistake on my side... I wouldn't rule out the purchase based on one data point.
Let's see what DJI does...
Hi UAV Ernst. Check this link for information on flying in Canada. Hope you have a great vacation. Happy flying.
https://www.tc.gc.ca/en/services/aviation/drone-safety/new-rules-drones.html