Changing text on navigation button

Hello allI am new to Lectora. In fact, I only started using it today. I used the Title wizard to design my module. It has automatically laid out a design with the navigation buttons on the left hand side. These buttons have been automatically named as per the name sof the chapters.However on one of these buttons some of the text is missing. Instead of saying Features and Benefits all you can see is Features. I have right clicked on the button icon in the left hand panel but can't find an option to change the text.Does anyone know how to change the text of a navigation button that was created using the title wizard?

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