I just got a Ghost Update today. It is for my medicals though. My timeline below:
Feb 16, 2021 -> OINP Invitation, Cut-Off Range - 453 ~ 467
Feb 18 -> OINP Application Submitted
Apr 7 -> OINP Incomplete Application Query [IELTS Photo print not good, obtain new IELTS TRF Report]
Apr 9 -> Response for OINP Query Submitted
Apr 15 -> Response Accepted by OINP
May 3 -> OINP Nomination
May 3 -> Express Entry Profile Update with nomination
May 4 -> Nomination reflected in EE profile.
May 12 -> ITA Received, CRS Score: 1054, Cut-Off Score - 752
June 25 -> PR Application Submitted
June 26 -> AOR (Application of Receipt)
Nov 1 -> Biometric Collection Letter Issued
Nov 9 -> Biometric completed
Feb 1, 2022 -> Upfront Medicals completed
Apr 21 -> Ghost Update (Background Check status changed)
May 6 -> Ghost Update (Medicals Passed)
Hope we will all get PPR soon.