Yes, this is common. This is also common. Any deliberate misrepresentation of what exists is called a deception. We call such a person dishonest. A dishonest person is one who is insincere.
Sincerity means honesty, and honesty means no deception.
Therefore, an insincere person is dishonest. Any deliberate misrepresentation of what exists is a deception. A white lie is usually considered a small or tiny lie that in perspective to a big lie seems insignificant. It is, however, a deception, and a nonbeneficial habit to get into. A deception, a deliberate false account of what exists, causes confusion in those who receive this false information.