[2023] Bug? Monday's update changed how Bonecrusher works with Death Note relic: Previously selected bones were crushed and you got Prayer XP, and unselected bones were noted/picked up. Now everything gets noted, but selected bones are left on ground.

Originally posted by Atlach_Nacha

Something I just found (Tested with big bones, at dark beasts under slayer tower):
If Tome of Um is set to send bones to storage, but storage is full and can't fit them, bones are dropped on ground, and not crushed by Bonecrusher.

If Tome of Um is turned off, bones are crushed by Bonecrusher.
If Tome of Um is turned on, and there's room in storage, bones are send there.