RELATIONS_TO_DISPLAY =5 is too few relations to display and the Load More puts the bottom page at the top, which then disrupts the actual order if you save.. Please allow RELATIONS_TO_DISPLAY default to be overridden via an environmental variable or setting. For my personal needs, I need RELATIONS_TO_DISPLAY = 100.

The order of the relations as selected and dragged is VERY important and the UI results in that order being lost with every save unless you click Load More, reorder them again, then save :(