This is in creative mode.
Holding an item as shown is working as intended.
I understand that, - What I'm trying to say is that it should say something like:
"There is no such item with ID minecraft:stone 6 masked", rather than just minecraft:masked by itself.
And I'm not sure why!
I'm not sure whether there was a placement sound in 1.7.9, but on the Windows version, there ISN'T a placement sound...
The health bar no longer regenerates (unless in peaceful) due to this glitch. It's like harcore mode now!
This bug is a must for the next update; finding playing difficult on LAN.