Throwing a lingering potion in survival mode will make the potion lose its effect (Doesn't affect creative mode).
[Client thread/ERROR]: ThrownPotion entity # has no item?!
This only occurs when the lingering potion is in a stack of one (similar to MC-105982 & MC-106043). If you have 2 lingering potions in 1 stack and throw it, it will work fine.
/give @p minecraft:lingering_potion 2 0 {Potion:"swiftness"}
Related issues
is duplicated by
relates to
Attachments
Comments

Cannot reproduce. Nevermind, was in creative mode.

Confirmed.

Entitydata Creative:
{Motion:[0:0.23687270899439758d,1:-0.2958043518422978d,2:0.050996063417414694d],shake:0b,xTile:-1,UUIDLeast:-6093964604143524278L,Potion:{id:"minecraft:splash_potion",Count:1b,tag:{Potion:"minecraft:healing"},Damage:0s},inGround:0b,Invulnerable:0b,Air:300s,OnGround:0b,Dimension:0,PortalCooldown:0,Rotation:[0:77.850266f,1:-13.680418f],FallDistance:0.0f,inTile:"minecraft:air",UUIDMost:-2788729802184637342L,ownerName:"Mustek",Pos:[0:47.38444571088601d,1:78.59319176487716d,2:-40.575183833320374d],zTile:-1,Fire:0s,yTile:-1}
Entitydata Survival:
{Motion:[0:0.26521014959960126d,1:-0.5335826283418743d,2:0.13567146013300416d],shake:0b,xTile:-1,UUIDLeast:-9089304376091173412L,Potion:{id:"minecraft:splash_potion",Count:1b,Damage:0s},inGround:0b,Invulnerable:0b,Air:300s,OnGround:0b,Dimension:0,PortalCooldown:0,Rotation:[0:62.90763f,1:-39.876064f],FallDistance:0.0f,inTile:"minecraft:air",UUIDMost:-6850973544308718029L,ownerName:"Mustek",Pos:[0:49.06484752498627d,1:76.09021288368203d,2:-38.65525628092179d],zTile:-1,Fire:0s,yTile:-1}

Note that MC-57926 was only the visual aspect of this ticket.

Still not fixed for lingering potions.

This issue is also present for me in 16w32b.

@unknown time to wake up? It's already marked as affected, reopened and everything.

My server reports the following when I activate the bug: [14:40:02 ERROR]: ThrownPotion entity 999785 has no item?!

Still not fixed in 16w35a