It seems to me that something changed or is broken regarding the automatic adding of events being sent to gmail to google calendar. For example flight itineraries, events, meetings et cetera. This used to work fine but something changed. Anyone else experiencing this issue? There is not a lot to be found except a few support tickets which deny there is a problem:- https://support.google.com/calendar/thread/20139154?hl=en
- https://support.google.com/mail/thread/5481486?hl=en