I'm using Indesign CS6 on Windows 7.
I'm working on a two-column book. I want the chapter headings to span the two columns, so I set that in the paragraph style. On the first page of the book (chapter 1), there is no problem. In chapter 2, the header remains in one column.
I have tried using another master page (both on page 1 and on the page of chapter 2): makes no difference. I've tried copying the text from chapter 1 to the position of chapter 2: same result. I've tried to use single paragraph settings: same result.
What could be wrong?
I still don't know what exactly went wrong, but after making a new document and copying everything from the old document into it, everything was fine.