I have a very strange problem. In my quite large project I have an extensive backend library of classes all belonging to the same Assembly. When I run the code Edit and Continue works fine in all forms and files belonging to the UI, but when I attempt to edit a class I get the "Cannot currently modify this text in the editor. It is read-only"-error for most classes (that is almost all classes with the exception of newly created).
Does anyone have a clue on how to fix this?