/summon dragon_fireball ^ ^ ^2 {Motion:[0,0,0],direction:[0.0,0.0,0.0],ExplosionPower:0}
The fireball vanishes quickly This also works with a tiny direction value (such as x=0.00001).
It acts as if the fireball is not redrawn if it has not moved.
Also, at a visible but small motion (such as x=0.1) the fireball moves for a few ticks and then dies. I think it has a limited lifespan which (afaict) cannot be changed
Linked issues
Comments 3
Ah, it turns out the dragon_fireball is being summoned, it's somehow invisible. kill @e[type=dragon_fireball] says it killed one even though I can't see it. (FWIW, adding Invisible:0 doesn't change anything, I tried that as a long shot.)
Duplicate of MC-145140
The reason I care, by the way, is that I'm working on textures, and it's hard to see how something looks if I can't see it in a world.