The Problem is easy to describe: You aim at something and nothing happens.
This is the case with the ghostboxes (video), rarely normal boxes and - most bothersome - switches in "Built to destroy!". For that I don't have any videos at the time.
It's quite a fickle bug, at times happening over and over, at others not being reproduceable at all - if tried with boxes that is. Switches however? Aiming in a right angle at it will never activate the switch. At least for me.
http://youtu.be/jlhU5or2PU0
http://www.youtube.com/watch?v=lKc925yTRZw
Couldn't find anything like this, it really bugs me and at times breaks the game so I guessed it might be improtant.
EDIT: Messed up a link - fixed now.
I have a Sentenza and experience the same problem. Most with regular boxes from a medium range. If I hit them from far away it hits them no problem.