I have a strange problem related to the standard phone field on task object.
From the documentation https://help.salesforce.com/articleView?id=task_fields.htm&type=5, it is said that :
the phone field contains the phone number of the contact or lead related to the task. This field is filled in with the value from the related contact or lead record.
But when when I choose a contact from the name field and save my task the phone field is not updated, even though on my contact page I do have the phone number fill.
Is this a restriction on using person account? I don't see anywhere saying that this field is not populated if I am using person account.