Quoted from Black_Knight:Sterns have this setting as well as a save ball on door open in case you drop it.
Quoted from Isochronic_Frost:Really??? Is it turned off by default? That has really miffed me during a good game a stuck ball fix kills the flippers and you can’t save it!
On recent Sterns it's Coindoor Ball Saver (Std. Adj. #49) and Coindoor Disable Tilt (Std. Adj. #60).
The above adjustment number locations may vary depending on your game.