Module calendar - ical export not usable for embedding

The ical export is functional in the Calendar module

An ical file for calendar export can be loaded at a specific URL.

When I tested this file using Google Calendar, it can be imported into an existing calendar. Events are displayed correctly.

When I try to import a URL using the embed feature, Google Calendar may embed this calendar as a new item named by the URL.(not nice, but OK...)

However, the body of the calendar is completely empty.

This is a failure because embedding is much more meaningful than importing a static ical export.

version 0.23.5

module Calendar