Same issue. When I open a book file, the book panel opens as it should. If I open one of the embedded documents, the book panel closes, and I can not get it to reopen without closing InDesign completely and reopening the book file directly. I've tried docking it to a panel and saving the workspace, but that had no effect.
Same issue. When I open a book file, the book panel opens as it should. If I open one of the embedded documents, the book panel closes, and I can not get it to reopen without closing InDesign completely and reopening the book file directly. I've tried docking it to a panel and saving the workspace, but that had no effect.