Hi Community,
We have been looking into this issue for a while and have recently discovered that it is occurring due to a known bug with the version of the FCK Editor that we are using on our site. The company we licensed the editor from is working on a new version of the editor that promises to resolve this problem and we will integrate the new version into our site as soon as it becomes available, but we're not quite sure when that will be yet.
In the interim, if you click inside one of the other text boxes on the lister page (such as the "Start Price" box) between working within the description editor and clicking one of the buttons or tabs, this should not happen. This problem is also specific to Internet Explorer so using Firefox could suffice as a workaround if it is causing you too much trouble.
If you have any other questions about your account, please feel free to contact our customer support team using the form on the following page of our site: http://www.auctiva.com/help/requesthelp.aspx
-Mike