IOS – Not receiving iCloud invites

Found this @ http://productforums.google.com/forum/#!topic/calendar/gtpX0F7kgKI

For what it's worth, I started having a similar issue recently and came across this thread while researching the solution. My wife has an iPhone, I'm Android, and she routinely sends calendar invites to me. We just realized that I've recently stopped getting those invites to my Gmail account, even though she's still adding me the same way she always has. It turns out that since my iCloud account is setup with my Gmail address, iCloud has started to "intercept" those invites from her iPhone. Instead of going to my email account, they're being automatically added to my iCalendar. This can be disabled by:

• Logging in at https://www.icloud.com
• Go to Calendar -> (Cog) -> Preference -> Advanced
• Beside "Invitations" select Email To (Use this option if your primary calendar is not iCloud).

This may solve your problem if:

1. Someone with an iDevice is sending your the invite.
2. You have an iCloud account.

I am fairly "late to the game", but since no answer has been accepted yet, my input might still be useful:

• the "meeting highjacking" you describe in your question is fairly well known with Exchange and the iOS calendar app; in fact it can be even worse where simply accepting an invite on your phone may make you the "owner" of the meeting; this seems to happen more often the larger the number of meeting attendees gets. This issue is so severe that in my company we discourage people from accepting meeting invites from their phones.
• as for the "butchered description" you describe in your answer: this, too is a well known issue between Exchange and the iOS calendar. iOS 8.3 supposedly fixed it, but since those cut off notes do not happen all the time, we do not have enough data yet at work to say for sure.