I am building a site containing lots of different page types. Everything is working great except that I suddenly noticed that the content textara field on every page type Page is gone. The header displays, but the dark grey box that should display the textarea field is empty.
For some of the page types I've created I use "$fields->removeFieldFromTab("Root.Content.Main","Content");" to remove this field. But I never ment to remove it from every page. I don't know if this is the reason either, because when I comment all theese lines out the content fields still does not show up.
Further research points the problem to the class=\"$class\" attribute in the <textarea.. output in the HtmlEditorField.php class. The $class variable contains the value "htmleditor typography". I have not edited non of these css-classes..