Directional formatting characters are showing in Relay email viewed in Microsoft Outlook

[drubino-mozilla]

I received the attached and screenshotted email after signing up for Firefox Relay. The email was delivered to an address at my private domain joivid.com which has mail services provided by Zoho. The mail renders properly in Zoho's web mail client. The email features directional formatting characters framing the branded name "Firefox Relay". The characters are FSI - First Strong Isolate and PDI - Pop Directional Isolate. I assume they are used properly (protecting the brand name from being rendered improperly amongst RTL text like Arabic or Hebrew). I don't know what would cause Outlook to print them to screen. If I copy text from Outlook to any other UNICODE text surface, they don't appear visually. For example, the following is copied and pasted from the email.

As a ⁨Firefox⁩ user, you get 5 email masks for free.

I am using "Microsoft® Outlook® for Microsoft 365 MSO (Version 2410 Build 16.0.18129.20030) 64-bit" according to Outlook's displayed version information.

[drubino-mozilla]

Strange that GitHub issues don't support arbitrary file attachments. This is a Google Drive link to the .msg file for the email: https://drive.google.com/file/d/1sr5M7xqdJC2vhWZB8ExcLo-WPGZYpAi6/view?usp=sharing.