It was then i noticed something. The 2 drivers side ( middle & rear ) and the window on the sliding door, all have this type of latch, and open :

However the rear on the passenger side has this, and is unable to be opened :


Is this normal, or does it look like someone at some stage has swopped the opening fixture for this one - and were un-opening rear windows an option on the Bongo, as it looks like a factory fit bracket ?