!! Important update !!
I have just received an email from the State Secretariat for Migration SEM (Switzerland) ... The equivalent of the police at the borders.
They confirmed to me that the information appearing on the European Commission's document is FALSE, that a visa is still required for the holders of the Canadian blue travel document, 1951 convention ... They confirmed to me that they transmitted the correction to the European Commission, which has still not updated the document.
In short, all this to say that you must ALWAYS check before traveling to the consulate or the authorities of the country where you want to travel. + have a permanent resident card.
Otherwise, you play with luck.