Outlook task HTML

[SamStam]

Please see pic below of a task with Outlook 2021 for Windows 10.

I've tried everything I can think of to fix this, but it's still shows HTML markup instead of text. How can I fix this? It displays properly in the Outlook app for Android.

[#2]

Update. I meant to say this is a problem with a calendar appointment. Sorry for the confusion.

[#3]

Thanks for the information