This problem occurs in version 4.30 - no problem detected in previous versions.
Steps to reproduce
-Create a topic named "products" resulting in a new SEO slug "products"
-Impossible to display this new topic; results in a 404-not-found
I noticed that the method TransformAsync within SlugRouteTransformer.cs never gets called to get the corresponding slug; looks like it is a problem at the MVC routing level.