When spectating a dropped item, the player's view does not rotate with the item

If a player spectates a dropped item, the player's view is fixed to a cardinal direction. A dropped item rotates at about 1 radian/s so I expected the player's view to rotate at this speed.

Reproducing is fairly easy:

• Drop an item in creative/survival mode
• Go into spectator mode
• Spectate from the POV of the dropped item
  -> Expected the view to rotate with the item, this did not happen

Likely cause: item rotation of dropped items is client side only