This is simply one expression of the corporate protocols in which privacy does not exist. It's not a bug. It's not an honest mistake. It is an implementation detail of a higher level abstraction.
Of Course this isn't a bug- It's a feature. the only problem is that there isn't a confirmation screen when it detects that you have put a person's email address in the incorrect spot. All that is needed is for a popup to ask "Would you like to send this event to email@example.com?".
A good UI would make it explicitly clear by highlighting the email address and/or by auto adding an explicit entry to the guest list.
At present there's no way to predict the behavior until after the fact. Something with that much consequence (sending an email to an unintended recipient) should never be done silently. By all means take the initiative with autofill etc, but the user should have the final say.
If the supposed design revolution within Google (http://www.fastcodesign.com/3016268/google-the-redesign) isn't just for show, the Calendar team (assuming there even is an ongoing team) clearly hasn't been touched by it and that ought to be corrected.
When the user gets unexpected behaviour doing something that many believe to be reasonable, telling them they're doing it wrong is really bad user interaction.
You can't change the behaviour of users, but you can make your software easier to use and more predictable in its behaviour.
You know what, reading all your desperate posts is very disturbing. Even Google Now knows to ask before auto-doing shit, but you sit here with some stupid surgeon-like "I can do no wrong" attitude.
Generally, I thought Google hired smarter people than you seem to be, so possibly you're some sort of false-flag bullshit.
It's mine, I just signed up to join the discussion, but evidently new users get rate-limited to only a few comments, so I've incremented the username by 1 to indicate it's still me.
The rate limiting exists for a reason. It is a bit arrogant of you to assume that your comments are worty of evadin site controls.
And is it actual rate limiting? Try clicking the [link] url, whic should give you a reply text box.
Disclosing company affiliations is polite.
Not making comments in public fora, but letting company spokespeople do it, is a practice I dislike but which I understand having seen the mess you've made with your comments.
The violet blue article is lousy. If there are errors it should be easy enough to find corrections. Take the time to do it properly - find the sources, pull out relevant quotes, build the post. Put that as a blog post and get hits, or put it as an answer in the thread and get upvotes.