If you use "Pick Block" on Boat item in the creative inventory to duplicate it, after switching to survival (via /gamemode s), all except the last cloned item turns into a "ghost item" when you try to use them.

Steps to reproduce:

1. In creative mode, put a Boat item to the first slot of the hotbar.
2. Use "Pick Block" on the Boat item to obtain a duplicate.
3. Put the duplicated Boat to the next slot.
4. (Optional) Repeat steps 2 and 3 a few times.
5. Switch to survival mode /gamemode s.
6. Start placing Boats and it simply does nothing and disappear.

This issue is similar to MC-9361, except the behaviour of splash potions is inconsistent.