1) You see that they just can't pick it up, because they don't have rights on this drop ( 0:23 dark elf with axe comming from the left of the screen and just standing on top of some jewel, then go to another one and only closer to the video end picking it up )
2) One of the chars who was resurrecting ( dark elf ) at 0:07 of the video trying to pick up jewel from the left ( can't because they don't have rights to pick it up ), then come back in group
I can't be 100% sure if they was using bot based on this video.