Thanks for your help.

1. I'm using the latest version 1.14.0.
2. The example can be found at https://zplutor.github.io/sqt/concepts.html. This page is generated from the repository https://github.com/zplutor/sqt. The doxygen file is located at doc/doxyfile.

I can see that the results are not sorted (independent of the setting of SORT_MEMBER_DOCS).
Problem with the given repository is that:

Please don't add external links as they might not be persistent (also references to GitHub repositories are considered non persistent).

@doxygen
Looks like in index.cpp a sort is missing as the list of concepts is taken from the namespace, maybe in static void writeConceptList(ConceptLinkedRefMap &concepts, FTVHelp *ftv,bool addToIndex) but possible on other places as well.

Sorry for the misunderstanding. Here is the zip of my repository.
sqt-main.zip