As per Sam Schillace, Gmail Engineering Director
Due to failure that occurred in Google's frontend web servers in a particular data center vowels went missing during routine maintenance , And it started spreading to other data centers which being prevented by creating a stopgap solution that limited the damage
One of the Google users who send the below picture as a complaint to Google
But then its effect or this error is not seen every where as few data centers were effected so Google must be look in to prevention of occurrences of such situation in future as millions of business are dependent on Google trusted services.
