OS Ubuntu 13.04; LibreOffice - version along with 13.04, no modifications.
The topmost toolbar in Writer, which has close, minimise and maximise buttons and shows the name of the document, does not show the ‘File’, ‘edit’ ‘view’, ‘insert’, ‘format’ etc. (I think it is called the ‘menu’) for one particular file but shows for all other files. This ‘disease’ has developed just today as it was showing that menu till yesterday for that particular file also.
I will be grateful if I am told how to restore it.