[MC-84243] The Wither's health bar dosen't visually go down when it has the NoAI NBT tag

I don't know if this has already been reported (I did check) but in snapshot 15w31b, spawning a wither with no AI and hitting it with any weapon will damage it but its health bar will look as though it hasn't been hit. Note that it did go down before 1.9 snapshots.

How to reproduce:
1. Spawn a Wither with no AI
2. Hit it with a diamond sword a few times
3. Watch its health bar stay untouched

Linked issues

is duplicated by 21

MC-197343 Wither's and Ender Dragon's bossbar ignore health value changes if boss has NoAI:1b Resolved

MC-277540 When attacking a wither with the NoAI:1b tag, the bossbar does not change Resolved

MC-278524 No AI Wither Bossbar Doesn't Update (duplicate) Resolved

MC-270029 Bossbar doesn't update on entities without AI Resolved

MC-267592 No AI Wither/Ender Dragon bossbar stays full, despite taking damage Resolved

16 more links

Attachments

Comments 30

user-f2760 2015-07-31T13:15:00Z

cannot confirm

Username1274 2015-07-31T13:17:12Z

I have updated. And please do not add files against the issue. They are invalid

user-f2760 2015-07-31T13:18:36Z

what do you mean they are invalid, it's stated nowhere that it's not allowed/invalid, I have used your exact steps, and I cannot reproduce this issue

Username1274 2015-07-31T13:22:10Z

Read how to reproduce

user-f2760 2015-07-31T13:22:15Z

confirmed with no AI wither, which you didn't mention before

20 more comments

marcono1234 2015-10-31T14:34:04Z

Confirmed for

15w44b

[Mod] redstonehelper 2015-10-31T17:56:39Z

WAI, NoAI is always WAI.

Username1274 2016-01-20T16:42:02Z

It used to go down. And it isn't modded. It could affect gameplay and servers using NoAi withers

[Mod] redstonehelper 2016-01-20T17:57:08Z

It doesn't affect vanilla survival gameplay, servers can fix it themselves. NoAI is WAI.

Username1274 2016-01-21T07:05:35Z

It still affects vanilla gameplay. Nothing rules it out.

Dlawso the Really Lucky Rabbit 2016-01-21T10:03:32Z

NoAI is WAI.

Username1274 2016-01-21T17:31:50Z

How is it? It's vanilla minecraft

Mustek 2016-01-21T17:32:48Z

The NoAI state is an internal state that you can use through commands. But it remains an internal state. If it changes, so be it, but it will not be supported.

Dzintars Klušs 2016-05-01T10:37:44Z

/summon WitherBoss ~ ~1 ~ {NoAI:1b,Invulnerable:1b,CustomName:"boss name",Silent:1b,Health:1}
The summoned wither will have 1 health, and can be punched to death, has the wither armor, but shows full health.
/entitydata @e[type=WitherBoss] {NoAI:0}
do this, and the health will drop down quickly.

user-f2760 2016-05-01T16:37:04Z

@unknown This is not going to be fixed,

The NoAI state is an internal state that you can use through commands. But it remains an internal state. If it changes, so be it, but it will not be supported.

SedarGames 2016-05-12T15:21:23Z

FVbico, tell me why not? It must be fixed.

user-f2760 2016-05-12T15:26:40Z

Again:

The NoAI state is an internal state that you can use through commands. But it remains an internal state. If it changes, so be it, but it will not be supported.

SedarGames 2016-05-27T14:48:14Z

Why it shoudln´t be supported? It is bug , it is critical to many people , and it doesn´t seem to be fixed.

SedarGames 2016-06-01T12:31:49Z

So because it is internal state , it shouldn´t be fixed? Really? Bugs should be fixed. And this is bug. Doesn´t matter if it is some internal state or not.

user-f2760 2016-06-01T13:28:48Z

If it changes, so be it, but it will not be supported.

Joshua LastName 2016-06-01T14:36:55Z

Bug or not, this should be fixed for all the map makers and minigame makers. And I've made a few minigames in my time. Having the bossbar has a timer to tell the player that, maybe they need to survival a horde of hostile mobs until the bossbar is depleted. (the witherboss could of the wither EFFECT lowering the bar) This will be tricky to do if a user can't set the witherboss's NoAI tag to 1. Because if it won't go down, the player won't know when to use their last healing potion of not.

user-f2760 2016-06-01T14:39:22Z

Don't give the wither noai, put it in a bedrock box and make it silent then, or spam it between ai and no ai.

Joshua LastName 2016-06-01T19:06:37Z

Already tryed that. The sounds it makes with it's wither skulls are quite noisey. I tryed "/kill" the skull before they hit the bedrock but didn't work.

SedarGames 2016-06-13T14:59:41Z

This bug has affected more people than 90% of the other bugs on this site. If anything this should be one of number 1 priorities.

SedarGames 2016-11-15T12:35:43Z

Still not fixed. Seriously , Mojang?

user-f2760 2016-11-15T12:39:41Z

Read previous comments:
NoAI=WAI

The NoAI state is an internal state that you can use through commands. But it remains an internal state. If it changes, so be it, but it will not be supported.

It won't be fixed.

SedarGames 2016-11-15T16:22:17Z

"It wont be fixed." can a developer get lazier than not fixing bugs? probably not...

Joshua LastName 2021-04-21T15:55:45Z

Wow. It's been almost 6 years since I reported this and nothing's changed. Summoning a wither boss in 1.16.5 yields the same result. Even if it's technically not a bug, withers without AI should still have accurate boss bars, otherwise what's the point of a static health bar rendering on-screen?

Having reread the discussions, it's kinda weird to see Dhranios defend the "working as intended" argument so passionately. To be blunt, it sounds like it's being labeled that way as an excuse to leave this unpatched.

Dolphin002 2022-10-22T22:52:55Z

Just ran into this issue 7 years later. Why has it been a thing for so long? How is it WAI? If this WAI then you might as well just remove the boss bar entirely.

tryashtar 2022-10-23T19:01:09Z

If it's intended to work this way, then it should might as well work a different way

Huh? 😛

Anyone dealing with this issue, just use /bossbar. It's not 1.4 anymore! 😃