So, once you are eligibility passed, IRCC is satisfied and accepts that you meet the minimum entry criteria as claimed under your CRS. You get an A11.2 pass:
https://www.canada.ca/en/immigratio...-electronic-application-on-section-a11-2.html
Background check is a different thing, and will only cause issues if you did something very wrong or missed to include background check. Nothing to with PoF, employment, etc.