Hi Inema,
Thank you for your well thought out reply. I appreciate the time taken to verify that I did not overlook a setting for it.
It's great that you are able to mention this to the Product Development Team! That's actually much more than I was expecting! Hopefully they will see the value in keeping this feature.
Glad for the explanation of where to leave feedback as well. I wasn't sure whether that was the best place, or if there was one of those "Vote for features" types of page that would be better.
Thanks again!
(Btw, it really is surprising default behavior for me! I understand that the contents are copied to the calendar entry, but often I'll want to review the information again later that day. It's usually more effort to find where the event is scheduled in my calendar than to find the saved invite.)