This is the default behavior of the MOSS editor since version 4.3.0. The CssEditor.css file will be loaded both in presentation and authoring modes.
If you want to have styles just for authoring mode, then you can separate them in another css file and tell the editor to load it as well. The second css file will not be loaded in presentation mode. Here is how to do that:
Add the following property to the editor configuration file:
As you can see, the property specifies which CSS files to load in the Apply Class dropdown. In this case the editor will load two files - CssEditor.css
. As you already know, the CssEditor.css file will also be loaded in presentation mode, but the CssEditor.css file will only be used when the editor is on the page.
All the best,
the Telerik team