You can only reorder a list if the sort order is set to manual. You shouldn't be able to drag & drop if the sort order isn't manual. The reorder arrows are only visible if the sort order is manual as well. I did add both the reorder arrows and the ability to click/tap on the number next to an entry to assign a new position to make it so that you don't have to rely on drag & drop if it's acting up. I did just test reordering with various sort orders and could not reproduce a crash.
Mike
Mike