The catch is that the separation of state and religion is seen differently in Quebec compared to the rest of Canada. In Quebec everyone is made equal by getting religion out of public institutions (ex.: a judge can’t wear a religious sign), in Canada everyone is made equal by being allowed to ask for religious exemptions (ex.: turban wearers don’t have to wear a helmet to ride a motorcycle in Alberta).
Quebec passed a law to prevent certain public servants from wearing religious signs (teachers, judges, police officers…) and the rest of Canada didn’t agree with them.