[MC-48907] Blazes don't naturally swim upwards in water or lava

The bug

When not aggravated, blazes will sink to the bottom of water or lava instead of floating at the surface like most non-undead mobs. They are still able to fly upwards if hostile.

To reproduce

Spawn a blaze in water or lava while in Creative mode.

Code analysis

This appears to be because blazes don't add a FloatGoal in net.minecraft.world.entity.monster.Blaze.registerGoals(), unlike most non-undead mobs.

Linked issues

is duplicated by 3

MC-69582 Blazes can't swim up a lava Resolved

MC-69898 Blaze won't fly away from water. Resolved

MC-274725 Blazes don't try to float on the lava when they are in the lava. Resolved

relates to 2

MC-49937 Mobs can't swim Resolved

MC-175158 The wither sinks in lava Open

Attachments

MC-48907.mp4

Comments 49

Paul Smith 2014-02-17T05:12:09Z

I tested this, it's true...

kumasasa 2014-02-17T07:25:48Z

Confirmed.

Zakery Corbett 2014-03-06T15:23:20Z

same applies to water. Blazes in the new snapshots will kill themselves in water because they don't try to get out of it.

kumasasa 2014-03-06T19:49:13Z

This ticket has been marked as a duplicate of MC-49937, in favor of the more general or better information provided.

kumasasa 2014-08-26T17:50:23Z

Reopening this ticket and separating from MC-49937 because the issue is still existing.

39 more comments

Kahless 2014-08-26T17:57:53Z

Copying over this info since it seems useful:

Blazes used to float in water and lava in 1.7.10 and 14w05b, and no longer do in 1.8 as of 14w06b.

For reference, 14w06a is when all mobs got the new AI.

Tamás Márkus 2014-08-28T12:10:36Z

Still confirmed in 1.8-pre3 with screenshot attached.

thilo77 2014-09-05T18:35:46Z

still present in 1.8 release

Noproct 2014-09-19T22:16:35Z

confirmed for 1.8

Daniel Bla 2014-10-14T21:00:07Z

Is there a fix planed for 1.8.1?

Dlawso the Really Lucky Rabbit 2014-10-14T21:01:56Z

If it was fixed for 1.8.1, this would've been resolved already.

Daniel Bla 2014-10-15T21:26:55Z

Thats why i wrote "Planed". There is no Date yet for the release, thats why i have still the hope that mojang will fix that annoying bug.

EDIT//

Okay, it seems there will no fix for that. Too bad. But at least the sprint key is now in the right category, what a gamebreaking bug...

Sonicwave 2014-10-15T22:45:57Z

Confirmed for 1.8.1-pre1.
Also the title could be changed to Blaze not swimming in water or lava since this happens in water too.

Kahless 2014-10-16T12:00:02Z

Yup, they used to be able to swim in water in 1.7.
This might have something to do with their new AI, since they started doing social aggro (like zombie pigmen) in 1.8.

Ebidz 2014-10-27T13:08:15Z

This is really annoying, built a double blaze grinder and when im about to test it, i figure out this bug exists...

Tamás Márkus 2014-10-27T20:25:14Z

I can relate.

Sonicwave 2014-12-04T01:58:15Z

Confirmed in 1.8.1.

Noproct 2015-02-04T20:51:22Z

I confirm for 1.8.2 pre6

Noproct 2015-02-05T21:27:08Z

Maybe useful info: Blazes are slowed down by lava when falling (they do not fall through lava like through air).

Isaac Shih 2015-10-18T23:34:52Z

Still doesnt work in 1.8.8

Noproct 2015-11-28T10:59:17Z

This is still an issue in 15w47c.

Noproct 2015-12-11T23:02:25Z

This is still an issue in 15w50a.

Noproct 2015-12-20T16:33:47Z

This is still an issue in 15w51b.

Noproct 2016-02-06T11:11:14Z

Guess what. Still not fixed in 16w05b.

Tom Snoei 2016-03-04T21:05:05Z

Still not fixed in 1.9. Dual Blaze farm still useless 😞

Tom Snoei 2016-05-22T16:20:06Z

This is still not fixed in 1.9.4

Tom Snoei 2016-09-20T18:16:54Z

Still an issue in 1.10.2

Sonicwave 2017-03-30T17:19:31Z

Confirmed for 17w13a.

Sonicwave 2017-10-22T20:02:29Z

Confirmed in 1.12.2 and 17w45a. This appears to be because the initEntityAI() method does not call this.tasks.addTask(1, new EntityAISwimming(this)); (unlike most mobs), which removes the "swimming in liquids" behavior.

Sonicwave 2018-02-01T09:35:49Z

Confirmed for 18w05a.

Jennie Ivins 2018-04-07T01:35:44Z

Can confirm for 18w14b.

Other mobs affected: bats, phantoms, and ghasts. They don't seem to know that they need to be above water to not die. Zombies don't swim up either, but I think that's related to the Drowned mob not this.

Jennie Ivins 2018-05-30T04:06:13Z

Can confirm for 18w22a.

Non-undead mobs that won't swim up but should:

bats
blazes

Undead mobs that do swim up but shouldn't:

zombie horse (MC-129262)

Jennie Ivins 2018-11-11T03:31:18Z

Can confirm for 18w45a.

Non-undead mobs that won't swim up but should:

Bats
Blazes
Endermites
Ghasts (can't actually tell if they are trying to swim up, or just flying around randomly)

Silverfish will swim to surface, but don't actually surface so they drown anyway. (MC-134755)

Avoma 2020-11-27T18:05:28Z

Can confirm in 20w48a.

Avoma 2020-12-24T12:02:44Z

Can confirm in 20w51a.

Avoma 2021-01-22T19:16:41Z

Can confirm in 21w03a.

Avoma 2021-02-06T13:53:45Z

Can confirm in 21w05b.

Avoma 2021-02-12T13:55:44Z

Can confirm in 21w06a.

Avoma 2021-02-19T11:19:52Z

Can confirm in 21w07a. Video attached.

Avoma 2021-03-27T15:14:38Z

Can confirm in 21w11a.

Avoma 2021-04-11T10:51:12Z

Can confirm in 21w14a.

Avoma 2021-05-01T16:49:23Z

Can confirm in 21w17a.

Avoma 2021-06-17T12:30:45Z

Can confirm in 1.17.

Avoma 2021-07-13T11:11:49Z

Can confirm in 1.17.1.

Avoma 2021-12-15T17:04:50Z

Can confirm in 1.18.1.

Avoma 2022-03-20T12:18:43Z

Can confirm in 1.18.2 and 22w11a.

Avoma 2022-06-13T12:25:18Z

Can confirm in 1.19.

Avoma 2022-08-17T16:02:02Z

Can confirm in 1.19.2.

himazinn_Japan 2024-12-10T08:55:47Z

Can confirm in 1.21.4.