The behaviour of the GameDev.tv appears to have changed.
It no longer returns you to the main categories (courses) view. If you have drilled into a sub-category it will take you back up one level to the category.
Behaviour experienced on mobile.
Updated Sat Mar 25 2017 09:05
Since the Discourse roll back of the other mobile issue, this seems to have corrected itself also.
Closing this topic for now.