Should running a Smart Scan require my password?

I think this is new, every time I run a Smart Scan in Avast Free it asks me for my password. I have provided it but it doesn’t ask me for a password to run a full virus scan. Both scans came back clean. Can someone tell me if this is correct or how I can change the setting, or do I have a virus?

Depends on if you have set a password on avast or not.

This is a minor but known bug. I reported this bug on 9th February but not a priority to be fixed due to many Avast users not keeping a setting password.