This past weekend, I flew:
Friday: SFO-YEG (Jazz, paid J)
Saturday: YEG-YVR (Mainline, paid J)
Saturday: YVR-YYJ (Jazz, Y as part of paid J fare)
Sunday: YYJ-YVR (Jazz, Y as part of paid J fare)
Sunday: YVR-SFO (Mainline, paid J)
Everything except the Jazz Y has posted within 2-4 days of the flight.
I know there was some discussion about Jazz taking longer to post than mainline, but that doesn't really explain SFO-YEG posting within 3 days.
I'm not concerned, since it hasn't been 8 days and I haven't been able to submit the retro-credit, but it's... interesting.