When you use /summon FallingSand ~ ~ ~

{Time:2(and changed it to 100),TileID:35,Data:14,DropItem:0}

it will summon a falling sand entity and say that it was successfully created but it never shows up,and if it is truly summoned successfully it is invisible till it stops moving

What I expected to happen was...:
When I type /summon FallingSand ~ ~10 ~

{Time:2(and changed it to 100),TileID:35,Data:14,DropItem:0}

into a command block and powered it, and it created a falling sand entity that looked like reed wool, and it outputs that it was successfully created

What actually happened was...:
I type /summon FallingSand ~ ~10 ~

{Time:2(and changed it to 100),TileID:35,Data:14,DropItem:0}

into a command block and powered it, it outputted that it was successfully created but it never was created.

Steps to Reproduce:
1. Download the map(attached as connect 4)
2. Open it up and go stand on the wooden presser plate
3. Than press the place button
4.than Press the button behind you
5.next look at the command block in front of you copy it and than do tp ~ ~15 ~ and go to the connect 4 looking structure and than paste the command into your chat.

Included documents connect four mini map(needs to be downloaded, because my schools internet/computer dose not allow me to go on it, for some reason I can only go on the bug list from my ipad )
And recourse pack for it (located in the recourses, in the world save)

https://www.dropbox.com/s/q02p23i6h7zpzp1/Connect%204%20for%20mojang%20bugs.zip

Drag track map for realms update( would love you guys very much if you were to in clued it in the realms mini games(trying to Finnish is so I can send it to you, send me a tweet @Austinchopra if you guy are interested) and I will be working on it to bring new content to it)