When using the /summon command to create FallingSand, the blocks appear for a second, then disappear.
GIF: http://dl.dropboxusercontent.com/s/veyes607fn2qag6/bug%20%5B13w41a%5D.gif
MC-34850
Summoning Falling Sand creates Visual Glitch
Resolved
Works As Intended
0
Falling blocks have magical behaviours, you'll have to play with their NBT.