My wife shows as a dependent on my file since August.
I think I have had some sort of bad luck with my profile. Since the last submission, my file still showed "Your action is required" (despite everything had been submitted and I confirmed with an agent on the phone there was nothing to send over to them). Since the request they made back in August (requesting several documents from me/my wife), I noticed that sometimes when I opened the 'View submitted application or upload documents' page, a random 'Client Information' row shows up with an 'Upload file' button next to it. I had nothing to upload in this row and, as I said, that thing only happened randomly in about 1 out of 10 or 20 times that I open that page to view submitted documents. I believe that is a software defect (bug) in their systems.
I then had an idea this evening: I went to that very same page -> from "Account Home", clicked on "Check full application status" and from there "View submitted application or upload documents" at the top. I positioned the page in my browser at the very bottom (where usually the 'Client Information' randomly shows) and I refreshed (F5 key) the page around 20 times. The "Client Information" showed up, and I hit the "Upload File" button. And guess what, I could select a file to upload. I rushed to write something to IRCC, pretty much explaining I had nothing to upload and there would be some sort of bug in my online profile. Saved that as a PDF and uploaded it. It worked! After that, I just submitted the document as normally we do, and now I finally have "Submitted" under "Current status".
This bug is so weird that, even after having submitted this document, I head back to the list of submitted documents and everything else is there but the "Client Information". Only God knows what is happening there!