[MC-183240] Mobs still count towards the mob cap during their death animation

The bug

While a mob is dying it still counts towards the mob cap.

To reproduce

/gamerule doMobSpawning false
Set difficulty to peaceful
Set difficulty back to another difficulty
Open F3 and observe the line starting with "SC"
Summon a husk
→ The "M" value increases by 1, indicating that the mob cap for hostile mobs increased by 1
Kill the husk
→ ❌ The "M" value doesn't decrease again until the death animation stops

Related issues

relates to

MC-132608 Slimes and magma cubes split in method marking entity for removal (setDead)

MC-124871 killing an entity in a function and testing for that entity afterward will still execute commands

Attachments

MC-183240.mp4

Comments

migrated 2020-05-09T14:35:04Z

[media][media][media][media]

violine1101 2020-05-09T22:49:30Z

Confirmed. Probably affects older versions too, but I did not test that.

Finnegan O'Donnell 2020-05-10T13:58:10Z

It does, Scicraft experienced it in 1.12.2, and maybe even 1.8, it is a very old bug.

Finnegan O'Donnell 2020-05-31T21:45:12Z

A way to fix this bug would be by giving all mobs in their "death phase" the persistence required tag.

Marty McFly 2021-06-21T20:27:11Z

Affects 1.17

PurPur5 2021-06-21T21:06:10Z

Can confirm in 1.17.1 Pre-release 1.

PurPur5 2021-06-30T19:32:04Z

Can confirm in 1.17.1 Pre-release 3.

PurPur5 2021-07-05T21:04:50Z

Can confirm in 1.17.1 Release Candidate 2.

PurPur5 2021-07-06T19:56:18Z

Can confirm in 1.17.1.

PurPur5 2021-09-25T02:15:29Z

Can confirm in 21w38a.

PurPur5 2021-11-20T19:30:37Z

Can confirm in 1.18 Pre-release 5.

MisteryGates 2021-11-20T21:05:03Z

I don't think anyone would notice it if this got changed.

PurPur5 2021-12-17T01:34:49Z

Additional note: If the mob is holding an item and is killed, the corpse will appear as if it is still holding the item, but the item is dropped before the corpse disappears.

PurPur5 2021-12-18T03:37:30Z

Can confirm in 1.18.1.

[Mod] Jingy 2024-02-20T02:55:40Z

Can confirm in 24w07a.
Relates to MC-106291 and MC-124871, which are both game behavior for mobs during their death animations (or rather, entities when they are marked dead, but not cleared yet)