I've just disabled ALL vB
hacks I have on my installation, but the problem is still evident.
The original text it had in the 'PayPal Email' field came from an Ad I had there a while ago, although this was deleted whilst I was still running v4.x
I cannot explain, but you are more than willing to try on my system if you want the system details to login and see?
(The original wording it displayed "Spedeworth RCE Superstox for Sale" came from an Ad the Classifieds system called Product=26).