Default value from global set not working if leads comes from Whatsapp

Default value from global set not working if leads comes from Whatsapp

I have field called 'Marketer' and I have set default value from global set like this


if it is created manually by pressing 'Create Lead' button it works without problem, but the leads created automatically from Whatsapp (Business Messaging) the 'Marketer' field will left empty (I expect it will be 'BKB' as the selected default value)