Summoning FallingSand Not working

There is an issue where the command "Summon" specifically will not spawn "FallingSand" by the player or by a command block. What will happen is that the sand will show a glimpse of the falling sand and will disappear very shortly after that. All that is required to recreate the problem would be to type and use this command into a command block or by the player:
"/summon FallingSand ~ ~ ~".