For a standard field, you have set a default value in Code List Restriction.
But the field is not defaulted to that value.
This is an expected behavior. Defaulting is not supported in Contacts Quick Create.
You can choose the options from the drop down.
CLR, default, Contacts, QC, default value , KBA , clr , default value , qc , contacts , LOD-LE-RC-CLR , Code List Restriction , Problem