If you summon a FallingSand entity with tag {Block:minecraft:chest,Time:1} or any type of chest, the chest won't be rendered. This bug is in the game since 1.7
MC-98189
Falling Chest
Resolved
Duplicate
0
god_of_sound
(Unassigned)
Unconfirmed
Minecraft 1.9 Pre-Release 4
Retrieved
duplicate of MC-64634 which is working as intended