Affects Version/s: Minecraft 1.7.4, Minecraft 14w07a, Minecraft 14w08a, Minecraft 14w11b
Fix Version/s: Minecraft 14w30b
If you try to place end portal, the portal isn't placed. Instead, the block is air.
How to reproduce :
Do one of the commands:
EDIT : If you place manually the portal block, the portal despawn.