James Moton
- jamesmoton
- jamesmoton
- America/Chicago
- Yes
- No
The bug
When you place a Monster Spawner and use a Shulker spawn egg on it, and let it spawn Shulkers, they appear white and the value of their "Color" tag is 0 (white), instead of the expected 16 (for end-city generated shulkers).
How to reproduce
- Place a monster spawner somewhere in the sky (preferably in the End), for example by flying up high and running
/setblock ~ ~ ~ spawner
- Then, use a Shulker spawn egg on the spawner.
- Wait, and then the shulkers that appear will be white (0) instead of the expected purpur purple (16, default).
Steps to reproduce:
1. Start Minecraft1.17.1.
2. Create a new world or join a world.
3. Press F3+L.
4. Before the 10 seconds are up, exit the world by pressing Escape then clicking "Save and Quit to Title".
5. Notice the resulting crash.Steps to reproduce:
1. Start Minecraft.
2. Create a new world or join a world.
3. Press F3+L.
4. Before the 10 seconds are up, exit the world by pressing Escape then clicking "Save and Quit to Title".
5. Notice the resulting crash.
Crash on "Saving world" when F3+L profiling is active - java.lang.NullPointerException: Cannot read field "f" because "this.A" is nullCrash on "Saving world" when F3+L profiling is active - java.lang.NullPointerException: Cannot read field "f" because "this.D" is null
When a tag is defined via a data pack that is loaded in one world, that tag stays defined on the client side and is not removed even if the player logs out of a world and joins another world.
Game output console01:12:15.191 Not all defined tags for registry ResourceKey[minecraft:root / minecraft:item] are present in data pack: minecraft:bookshelf_books, minecraft:hanging_signs 01:12:15.191 Not all defined tags for registry ResourceKey[minecraft:root / minecraft:block] are present in data pack: minecraft:all_hanging_signs, minecraft:ceiling_hanging_signs, minecraft:wall_hanging_signsAlso affects 1.20 snapshot game built-in data packs.
Steps to Reproduce:
- Create a new world with the attached data pack.
- Look at some grass blocks, dirt, sand, or waxed copper.
- In the F3 menu, notice that there is a line #test:tags_persist_across_worlds.
- Save and quit to title.
- Create or join another world with cheats enabled but without any data packs beside the vanilla data pack.
- Look at some grass blocks, dirt, sand, or waxed copper.
- In the F3 menu, notice that there is still a line #test:tags_persist_across_worlds, which should not be there given that the data pack providing the tag is not present in the current world.
- Check the client logs. One or more lines of the following form would have been printed.
Not all defined tags for registry ResourceKey[minecraft:root / minecraft:block] are present in data pack: [...], test:tags_persist_across_worlds






Maybe this should be ported to Computer edition.
Can confirm for MC 1.12, used the following:
Repeat command block, always active, command inside was 'give @p air ...' instead of 'effect @p absorption ...".
Can confirm for MC 1.12.
Confirmed for 18w08a and is way more prevalent now.
See this video: https://www.youtube.com/watch?v=Lny6Ri7y_y8
Command to summon Phantom:
{Id:14,Amplifier:0,Duration:199980,ShowParticles:0b}/summon phantom ~ ~10 ~ {Size:5,Passengers:[{id:"pig",Saddle:1,ActiveEffects:[
]}]}
Basically, if you summon a saddled pig riding a Phantom, start riding the pig, switch gamemode to Survival, and then /kill @e[type=!Player], instead of falling down as expected, the game crashes or kicks you out for "Invalid move packet received". Tested in 18w09a.
It's now not fixed as of 5:25:23 am UTC | Monday, July 30, 2018. See attached image.
When did bug MC-4 start appearing? Was it before MC 1.4, i.e. before Mojang started using JIRA as it's bug-tracker?
Note: the game crashes (divides by zero) after 10 loops of the following set of 3 commands (hereafter referred to as function 'test:b') are invoked within 5 IRL seconds:
The log says (1.13.2 vanilla):
Note that there are a total of 10 * 524 = 5,240 > 5,000 recipes (which is the value of (long)this.recipesOutputs.size()) that are being drawn in the "New recipe unlocked" toast, causing the division by 0 error to occur.
To workaround this bug, you will need to shut down the server and use an external program (such as Amidst or MCEdit or NBTExplorer) to move the player back to a valid position (such as spawn). I tried teleporting to 10^34 meters up, but the game froze and I had to use Amidst to move the player from 2^63-1 meters down to the normal 64 meters.
There are actually infinite diagonal patterns of mineshafts (that are the same). Example: The mineshaft at -300 ~ 300 on seed -1536859279 (or -1536859280 or any other seed) is the same mineshaft as the one at -1000000 ~ 1000000 on the same seed.
See https://youtu.be/J90a8-WUK8c?t=986 and https://chunkbase.com/apps/mineshaft-finder#-1536859280 (set version in dropdown to "Bedrock Edition - Minecraft")
From the description of https://www.youtube.com/watch?v=DECKDy8gu1Y:
In short: In Minecraft 1.13.2, you can't sprint while being exactly in the middle or on the edge of a block for more than a few ticks due to some floating-point errors. This is despite not actually colliding with any non-floor blocks.
Can reproduce in 1.14.3. When you press F3+C to get your coordinates (including rotation) as a /tp command, the x rotation value can fall outside the intended range of [0°,360°). This means that in order to get within that range, I need to spin clockwise or counterclockwise accordingly, sometimes a lot, or otherwise manually compute the value module 360° every time.
Workaround: Run the following command every X seconds:
/data merge entity @e[type=minecraft:ravager] {Patrolling:0b}
Confirmed for 1.15.2 with the above command, and also with the following command:
Can confirm for 1.15.2
To reproduce:
Or (when standing on a grass path block):
Sounds like you may be short on RAM. How much RAM do you have? What other programs did you have open on your computer at the time of the crash? Have you tried other Minecraft versions? Given that the crash report mentioned 32-bit Java, have you tried 64-bit Java?
Can confirm for 1.16.1, but crashes with a different error:
com.google.gson.JsonSyntaxException: Expected text to be a string, was null (json)You actually don't need the offhand slot to reproduce this bug. If you throw a trident with Riptide III and switch to another item in your mainhand (such as a golden sword), that sword will still take durability damage and it will be as if you attacked with the sword instead of the trident.
Can confirm in 1.17.1. However, the regeneration applies at 1 HP every 3 seconds instead of 1 HP every 2.5 seconds, a 16.667% reduction (1 in 1.2) instead of 66.667% reduction (1 in 3).
Can confirm in 1.17.1.
I can confirm that this is an issue while reproducing
MC-235964. latest.log.zipCan confirm in 22w06a.
Can confirm in 1.18.2 Pre-release 1.
Can confirm in 1.18.2.
Can confirm for 22w14a on Windows 10. latest - 22w14a.log
Can confirm in 22w15a.
Can confirm in 22w15a with the provided world.
Can confirm in 22w15a.
Can confirm in 22w15a.
Can confirm in 22w15a.