Mojira Archive
MC-200004

Long duration fireworks can freeze/crash world and server

When using a firework with extended duration, it is possible to cause the game to freeze or server to freeze and crash. I have tested this on both a singleplayer world and on a server environment. In the server environment, not only does the server freeze, the cilent also freezes and becomes unresponsive, same as in singleplayer. Once it becomes unresponsive there is no option but to kill it. This makes this bug especially concerning as any creative server that allows items from custom hotbars is susceptible to the bug.

 

To reproduce:

1. Give yourself an extended duration firework on singleplayer or on a test server

/give @s firework_rocket{Fireworks:{Flight:127b}}

2. Spawn about 10 fireworks in an enclosed room with a ceiling.

3. Wait for a while, the longer they exist, the laggier the game gets until it freezes.

 

Expected behavior:

The fireworks should continue to exist and act as expected without any additional lag regardless of duration.

Fixed

Onnowhere

[Mojang] slicedlime

2020-09-11, 05:49 AM

2020-11-01, 05:16 PM

2020-10-21, 01:28 PM

2

4

Confirmed

Very Important

Crash, Performance

crash, fireworks

1.16.3

1.16.4 Pre-release 2