PDF Output Shows a Bookmark for my Title Page

[Haz]

My PDF output has suddenly started to show a bookmark for my Title Page when outputting to PDF. The Reader LH bookmarks pane shows:

TitlePage
Chapter 1
Chapter 2
etc.

Obviously I don't want that first "Titlepage" bookmark to be there (I'm presuming that comes from the Page LAbel in properties). I can't find where I can change it back so that only the chapters & subheadings are listed. I've checked that the page type is 'Frontmatter' and that the Frontmatter page type is "Title". I can't think of anywhere else to look now

[dorcutt]

Try this maybe. In the PDF target's advanced tab, there's an option called "Include non-TOC bookmarks in the bookmarks pane." Make sure that is unchecked.

[Haz]

I don't know if I'm on a different version, but the checkbox is in "PDF Output" on my version (11). Nope, it was already unchecked.

I've checked through a previous project where this didn't happen, and this one where it did. Can't see any difference. It's a bit maddening as I can't think of anything I did different yet here it is. Anyone else had any ideas? I've attached a screenshot showing the problem.