Hi @O365 Buddy
This is the expected behavior documented in this link if the user is synced from on-premises to online:
Change in naming convention of user’s Name parameter
You can use the following cmdlet in Exchange Online Powershell to get the display name of the owner:
(Get-Recipient 60fb55ad-03e5-4a1c-b76e-59dedf9ef4df).DisplayName
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.