"The Night Watch" is the only picture in the gallery to have its own "escape slide, " designed in 1934, to allow it to be swiftly moved out of danger in case of fire, or other threats.
The North Sulawesi case is being monitored very closely, because developments there could herald the start of a slide down the "slippery slope" - in other words, if a re-vote is permitted there, it could open the way for re-votes in other provinces - which could end up skewing the final outcome.
The basic problem seems to be with non-bumper cases, specifically ones that slide on to the phone, and the danger of trapped particles scratching the back of the phone while taking the case on and off.