Hi @asmecher,
there is a strange phenomenon concerning the creation of chapters:
When creating a chapter, the title of the chapter appears on the landing page, but not the button with the link.
To see the button, I have to select the file again in the Add Chapter modal window and click in the white area next to it and save it again.
I always had to open the Add Chapter twice and then save the selected file to see the button.
I tested it using Firefox and Chrome on the pkp demo server, too. Same behaviour.
Best Regards,
habib