Hi David,
Thank you for using our services.
The reported problem has been fixed in our internal build. However, the problem is that in Sitefinity there are almost 59 project that are build against certain version of Telerik.Web.UI which means that making an custom upgrade could cause other problems for your website.
We came up with a temporarily solution. First you need to
map the external templates for the views you are going to use. Then, open mapped templates and set the following properties in the RadEditor declaration:
In the declaration above we are diabling NewLineBr which inserts a new line or
a paragraph when the [Enter] key is pressed.
We have also removed the following ContentFilter - FixEnclosingP(This filter removes a paragraph if the whole content is inside it). Let us know if there are any problems after applying the changes we recommend.
Best wishes,
Ivan Dimitrov
the Telerik team