When I switch between user profiles and end up at owner profile it will ask for pin ( I assume this is normal ) but if I double tap the finger print area or swipe down from pin screen it will accept fingerpring. Is this normal or a known bug ?

If you have set a fingerprint in the owner profile, then yes, the correct behavior is for it to ask for that fingerprint, but it can sometimes take time before the fingerprint prompt shows up, as per the above upstream issue.

7 days later

Has anyone had the reverse issue where switching back to the owner profile requires a password but the option to use a fingerprint never comes back even after logging in and locking the screen again?