Office 365 Profile picture not displayed inside SharePoint People Web Part on Modern Site Page

This issue is fixed now for the customer. Using Microsoft Support, they were able to make required changes serverside which caused the issue for some Office 365 users. For some users specific users attributes were not set, for others they were according to Microsoft, although were not able to change these from our side. Microsoft changed things serverside to handle this. After a serverside sync update, the Office 365 profile pictures also started to display for each user inside the SharePoint People web part on Modern Site Pages.