When attempting to use a NoAI tag on non-living entities.
It will not work.
The new tag NoGravity for ArmorStand obviously sounds like it should cover those entities.
But it doesn't. This is a bug as its expected behavior and has no valid reason for not being covered.
An example is FallingSand. A lot of mapmakers can use this to create fake walls which look solid, but players can walk through.
Comments 3
NoGravity also doesn't work on mobs in 1.8.
In fact it doesn't seem to work on anything but the Armor Stand. It seems as though this is intended but it would be a cool addition nonetheless.
http://minecraft.gamepedia.com/Armor_Stand#Usage
NoGravity is indeed specific to armor stands. Feature requests are currently handled on the suggestions subreddit.
Yeah I tried them on FallingSand when NoAI tag came out but didn't worked... Even if this is not a bug, it would be great for mapmakers to implemented in game.