Hello RNonay,
Thank you for your reply,
Like i said it is our traditional method for accessing message sources in Outlook. Here is Microsoft's official link: View internet message headers in Outlook - Microsoft Support.
For the product design, you may post your request in our feedback portal, they are in charge of the product design, from my side as a Microsoft moderator i just reproduce the issue and provide some solution or workaround to customers.
However this workaround i provide can be helpful for some users in our community also if you find my workaround helpfull, please kindly vote, it can be helpful for others users in this community .
Comments and feedback from our customers really motivate us to perform better and better and provide as much help as possible.
If there is any issue related with the Office applications in the future, please feel free to post back in this community.
We will be here for help.
We look forward to your reply. We will continue to assist you based on the information you provide. I sincerely appreciate your patience and cooperation.
SincerelyEben Ezer Tres | Microsoft Community Moderator