Trapped chests display as a triple chest in spectator mode.

I expected a trapped chest to only display its own inventory.

When I opened the trapped chest, its name was "Double chest" and the inventories next to the chest were displayed as a triple chest.

Steps to Reproduce:
1. Place a trapped chest.
2. Place two normal chests on either side of it.
3. Put items in it if necessary.
4. Switch to spectator mode. /gamemode spectator
5. "Open" the trapped chest.
6. Voila, triple chest!
This only works in spectator mode. Tested in Creative.