Summoning an entity and giving a custom name is not working (custom name being visible), for example summoning a wither skull or item.

Please provide the exact commands that you've used or steps to reproduce.

/summon WitherSkull ~ ~1 ~ {direction:[0.0,0.0,0.0],ExplosionPower:0,CustomName:"Hi",CostumNameVisible:true}

Try this command:
/summon WitherSkull ~ ~1 ~ {direction:[0.0,0.0,0.0],ExplosionPower:0,CustomName:"Hi",CustomNameVisible:true}
You misspelled Custom in CustomNameVisible and left out a space after the last tilde.

Thanks and sorry for the misspell, for some reason this worked in previous version. But if i summon an item it still doesn't work.

/summon Item ~ ~1 ~ {Item:{id:iron_sword,Count:0},PickupDelay:100,Age:-32768,CustomName:"Hi",CustomNameVisible:true}

. This used to work as well.

Hmmmm... I'll look for a way around that one.

Yeah, that works. Although there's a lot more problems with summoned items than this... I hope they fix it.

Duplicate of MC-55767

No it isn't. That ticket has to do with hiding the name of WitherSkulls, while this one has to do with the name of items not displaying as in previous snapshots.

However, this post is a duplicate of MC-57516. I will move my discussion there.

This is all mixed up in my head...

CustomNameVisible:1 doesnt work but does and CustomNameVisible:0 good false? This is what I am thinking in my head right now