Hi @Administrator ,
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According to your description, i notice that you have done the following test: forward the email you received to yourself and then you found that the forwarded email received in your Inbox folder is different from the forwarded email in your Sent Items folder, specifically the content of forwarded email received in Inbox is missing, right?
If so, the most obvious difference I noticed is that the link in the forwarded email in the Inbox folder disappears, in order to further confirm if the issue is related to the link, please try to test another email without link & email with other links to check if there're any differences.
On the other hand, in order to further confirm if the issue is related to your current Outlook 365 desktop client, it's suggested that you could log in to web mail and do the same test or forwarded the email to other users to check if there're any differences.
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