Grabbing outer deco through walls

1. Title: Grabbing outer deco through walls
2. Reproduction Rate: 100%
3. Blocker? No
4. Details:
   Standing in the second floor room of Twin Spire Manor house I attempted to grab a wooden chest from a stack on the inner wall of the building. Instead I grabbed a 4 story linden tree from outside and put it in my backpack. The next attempt was trying to grab a castle wall piece. Only the 3rd attempt, carefully targeted and may be with slightly shifted position worked.
   I think it should not be possible to grab items which are out of line of sight and pull them through walls.