You're lucky echoDreamz, 

With EAS, I still have empty title on recurring appointments both on Webmail and Thunderbird/Android Smartphone :

Regards.

@Chris - That sucks... We've done 3 different users now, 1 was MAPI-only, the other 2 were MAPI+EAS and all 3 instances were fixed.

I'd say open a ticket with ST if you have not already, sure they will get it fixed up.

@Chris: Where were these recurring appointments created originally? Were these generated in Outlook EAS, webmail, or an Android client perhaps? The protocol and device type are usually part of our issue on things like this. Please don't hesitate to open a ticket with us if you need any help tracking it down.