Everything for us in the new tracker was set to "Completed" (including background check) since around Jan 25th. I think everything after that was just formalities - submitting a new police report, medical check, etc.
After we submitted those two new things we were still waiting for PPR - so we contacted our MP and he contacted IRCC and they said our application was at "all stages complete - awaiting final review".
So I submitted a webform to IRCC saying that our case was past the normal processing time and asking why the final review was taking so long, etc. I don't know if it's a coincidence, but about 2 weeks after that we got our PPR.
If you haven't already done so, I would strongly recommend contacting your member of parliament - now that you are past the normal processing time, IRCC is obligated to provide you with a response.