Hi,
I sent my PR on 31 October 2019 and that same day received a refusal on a visitor extension--so we sent the PR application and I drove down to Fargo ND that evening since I no longer had a valid status in Canada. I came back several weeks later, was admitted with a new visitor record (I'm a US citizen, so it is pretty simple), then sent my OWP application in December.
I'm not as knowledgeable as some about where to find the information, but I was just watching my GCkey account. My ECAS had an update when my medical was recieved, but nothing about passing. My GCKey account info on the medical changed to passed a few days later (then my background check started a few days later!). I hope all you December applicants see such movement soon!