My test was marked complete on Feb 21 and I had 2 ghost updates after that...one on March 6 and last one on March 8. It's been radio silence since then.
Let's see if things move once they get the tracker sorted out. I'm still hopeful that they took it down to fix the fact that things weren't being reflected or working properly. We have seen odd emails being sent out (e.g. pr welcome to citizenship applicants), people finding out that their oath was scheduled when they call the IRCC center but nothing on their tracker, and osth scheduled and completed with LPP still pending on the tracker. Things seemed a bit off to be honest.
All conjecture at this point but there's nothing wrong with remaining positive.