Status of the application in your profile will say application/profile updated instead of submitted. Once you navigate back to the same page, status will become submitted again. There wont be any other actual change that is visible in your profile and usually you do not get an email. This is called GU (Ghost update).How do you know you got a GU?
Do you just get an email saying there is an update on your file?
Or do you an actual update on your IRCC profile?