Randolph Safehouse 2 sends me to the Scrap Palace to clear all the hostiles out. However, once the area is cleared, the quest will not update, despite the [CLEARED] tag on the map.
Of possible importance is that all of the 2-3 times I've cleared the area for this quest, I was involved in multi-faction brawls - Once between the resident super mutants, myself, and the Brotherhood of Steel; and another with myself, my settlement provisioners, the Brotherhood again, and some random raiders.
Might that be the cause? I have no idea.