RH2020: TOC icon partially missing and book name not displaying
Hi everyone.
I have just started using RoboHelp 2020, having used earlier versions for many years. I am running version 2020.4.173.
I have a problem when outputting to Responsive HTML5. One of the icons in the TOC is partially missing, and the name of the book associated with it does not display at all, although the topics do appear if you click the +.

This shows the TOC before it is expanded, and after expansion. I moved this book to the end of the TOC to experiment with it, but the same thing happens when it is further up the TOC.
I do use conditions in this project, but there are no conditions associated with this book or the topics in it.
The rest of the TOC is fine.
This product is being released next week so this is time critical! Any ideas would be very welcome!
Thanks
Laura
