This did not work. It appears to return the same results as when set to the US. It is saving the country preference though.
I managed to get it to work after manually editing the URLs, although clicking the wrong thing or refreshing the page would reset this.
Do you know why Canada is not present ?
It's there, but further down. The list goes Austria to United States, then Afghanistan to Zimbabwe... for some reason. Canada is in the second block. Again, for some reason.