New rich editor used for plugins and themes sounded great. But actually this editor barely works. It works in Firefox (but not always), and that's it. I tried Safari, Chrome and Opera, and when I save the changes, it removes line endings and makes all kinds of mess with the edited code. Also, positioning in the editor is not working as it should.
So, unless you are Firefox user you can't use it? Safari, Chrome and Opera are better browsers than Firefox, and they should be supported. Changes to the code should be minimal, since I used the same editor on some other projects without problems.