On all my previous Ducatos the rear doors opened 90 degrees and then were locked by the door check strap. If you needed the door to open further, there was a button you had to press to release the check strap and open it the other 90 degrees.
My current 2019 Ducato doesn’t have this button but the door stops at 90 degrees on (feels like) a detent in the check strap, but it’s very weak.
The other day was windy & I opened the right rear door from inside. As soon as I released the catch, the wind got hold of the door & swung it back so that it hit the rear bumper, denting the body work.
The inner handle is low (to a 6+ footer) & in the centre of the door with not much of a handle to hold on to, so I had no chance of holding onto the door.
I feel it would not have happened if it had the previous, earlier design of check strap & wondered if anyone else had had any problems.