Legend has a couple of paths that have high brand impact on our users and, as a consequence, result in brand damage for Legennd.
Solution: Check with the user before making any changes that result in Google Calendar changes. Adding a new item with autosave is fine.
Problem scenarios
Trying to drag an item into your notes may move the calendar item to a different time. The drag experience is touchy; it will even sometimes move the calendar block if you just click once
Deleting a note with a calendar item (the item itself or as part of a block). This will delete the calendar event completely.
These two scenarios, when there are additional participants in the calendar event, create confusion, embarrassment, and personal brand damage to our users. In today's scenario, a customer that I met with this week sent a canceled RSVP for an event that already happened.