I am sorry if this is a duplicate

It is impossible to disable the fire of a fireball (don't say the name causes WAI, could also be that the name is because it causes fire on impact).
/summon Fireball ~ ~ ~ {Fire:-1s,direction:[0d,0d,0d]}
and /entitydata @e[type=Fireball,r=5] {Fire:-1s} on a existing fireball doesn't work, even the entitydata command says successfully changed to "...,Fire:-1s"

And one question, was the bug that fireballs without any direction to move (only 0.0,0.0,0.0) flicker already reported, and if so could you please tell me the report number