We just released a small update today, which includes a fix for a minor bug we discovered. We apologize to anyone that might have stumbled onto this, no matter how minor of a hiccup it was!
Basically, here's what had been happening: When adding a new section in our custom documentation template editor, Quill would sometimes flag that section name as a "duplicate", suggesting that you already had a section by that name... When (most likely) you did not. You could still edit and use your intended name, so for those that encountered this, hopefully it wasn't too big of a stumbling block.
But now, this is fixed. Adding new sections does not lead to this "duplicate section name" warning -- unless, of course, you really did add a duplicate section name! We're working on an even bigger update that we'll be releasing soon, but wanted to get this fix out ASAP!
Thanks again to everyone that makes us aware of these things. (And to everyone that gives us ideas for new features and improvements!) We hope you continue to enjoy our custom documentation templates!