Smartdocs - API Page Displays Differently for Each Model

[#1]

Hi

How does the developer portal determine what to display when accessing the root page of a rendered model?

For instance one of my models displays like this:

The other model displays like this (despite having resources defined within the model):

I don't see any difference in settings between the models and therefore have no idea how to fix it. It's worth noting that on a different installation of the dev portal the oauth model that displays correctly above, doesn't display correctly. It feels a bit buggy, but perhaps I've just missed a check box or setting.

Thanks,

Gordon