As per the title, when using the base moulding applied through the globals and or prompts, they dont follow the size of the applied panel on the returns. I think they should, i cant think of much of a reason why youd want the base moulding to cut short, and listen to the carcase depth, and then have a overhang once the panel is extended, in our case for example, when making island cabinets. 

we have two back to back, one will have the applied panel, and one will not, we will extend the applied panel to cover BOTH cabinets, this would be fine but as i say above, the base moulding listens to cabinet depth and not panel depth. 

Likewise I'm also seeing hit and miss results on when the base moulding return is applied, sometimes its perfect sometime its requires a manual turn on. I see more consistent results on tall cabinets.