I've come accross those inconsistancies as well. Some cabinet objects include the cabinet and counter overhang in their hotspot depth while others keep have the hotspot at the edge of cabinet. I can't remember if some also have separate hotspots for the cabinet depth and the overhang.
Very frustrating.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"