Messages disappearing after upgrade to iOS 6
After I updated my iPhone 4s to iOS6 I noticed that messages and complete threads are disappearing when I open them in the Messages App. These Messages are sms based messages from different companies identified by a name, not a number, typically messages from the bank, coupons and membership details from different customer clubs etc. I can see the text in the preview, but as soon as I open the message/thread all content is gone, and the empty thread moves to the bottom of the list.
Has anyone else had this experience? Is there any fix for this?
Tried the same on an iPhone 4 with the same result.
iPhone 4S, iOS 6