I have first-hand experience with that. I'm representing this campaign, so I hear from them. I have been talking to 15 of them who applied in 2011 or 2012. They have passed every single stage of the immigration system under the IRPA—inadmissibility, criminality, medical—but basically there's been no response and the government is not releasing any data as to why these applications are on hold.
On October 25th, 2018. See this statement in context.