Sorry to resurect this issue but this bug is still present in version 6.6. Disabling the AntiSpamEmailEncoder is a work-around but it hasn't been fixed in over 2 years. We have many Cute Editors in our system and would like to utilize the anti-spam functionality. Please find a solution. (FYI - our problem is slightly different as we are seing "mailto:" being HTML-encoded and repeated over and over instead of "amp;" being repeated, but it is a similar situation and likely due to the same bug).