Azure AD guest user profiles are sometimes empty after invitation is accepted
When inviting a guest user (B2B) the guest user must consent and authorize Azure AD to read the guest user account Name and Email address.
However, most of the time the user profile that is created in Azure AD is not filling the "Name" attribute. This behavior is not consisted across different Azure AD environments.
It would also help a lot to enrich the guest profiles with other attributes like "First Name", "Last Name" and "Display Name" because it will greatly reduce the effort needed to modify these accounts manually.