Attributes with same UUID don't stack when wearing armour
When putting on pieces of armor, the attributes didn't stack up. I had on a pair of boots that gave me -10% speed, a chestplate that gave me -25% speed, and a pair of leggings that gave me -35% speed. However the effect applied to me was only the one of the last piece of armor I applied, not all of them added together. The operation applied to each piece of armor was 1, so in theory I should have had -70% speed, but it was pretty obvious that that was not the effect I had.
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Created Issue:
Attributes don't stack when wearing armour
When putting on pieces of armor, the attributes didn't stack up. I had on a pair of boots that gave me -10% speed, a chestplate that gave me -25% speed, and a pair of leggings that gave me -35% speed. However the effect applied to me was only the one of the last piece of armor I applied, not all of them added together. The operation applied to each piece of armor was 1, so in theory I should have had -70% speed, but it was pretty obvious that that was not the effect I had.
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Attributes with same UUID don't stack when wearing armour
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Duplicate of MC-16466.
Duplicate of MC-16466. The UUIDs must be different for them to stack.
Th3F4114n0n3, that's MC-19275, or MC-37516. They're both the same, but the first one was closed as fixed in 1.6.1.
WAI per MC-16466
Talking about armor, so WAI per MC-16466
@Dlawso the Really Lucky Rabbit: MC-16466 is WAI because of the duplicate UUIDs.
Most likely MC-16466 , can you at least provide the give command of both of those armor piece to be sure.
Duplicate of MC-16466
The value of UUIDLeast and UUIDMost must be different between two piece of armor.
What is still a problem? Attributes with the same UUID deliberately don't stack. If you want two instances to stack, give them each different UUIDs.
Bugs should not generally be reposted, especially "to bring it to team mojang's attention". That just means another report that's going to be marked as a duplicate of an existing report, like this one, which is a duplicate of MC-16466. If a particular bug is still occurring after it has been marked fixed, we can reopen the report.
Duplicate of MC-16466. Works as intended.
Work as intended, see MC-16466
Your chestplate and legging both use the same UUIDLeast and UUIDMost value. These values need to be different for each attribute modifier.
Next time you submit a report, you should really provide the command used in plain text, in your bug report instead of hidden in an image that can only be read by GIMP.
Probably a duplicate of MC-16466 then
Does MC-16466 describe your issue?
Duplicate of MC-16466. Works as intended.
Duplicate of MC-16466. This is considered working as intended.
Thank you for your report!
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We're tracking this issue as MC-16466, so this ticket is being resolved and linked as a duplicate.
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Thank you for your report!
We're tracking this issue as MC-16466, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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Make sure the attribute modifier on each armour piece has a distinct UUID (see MC-16466). If that doesn't fix the issue, could you provide the commands you're using to generate the armour?
Duplicate of MC-16466.
Duplicate of MC-16466.
Thank you for your report!
We're tracking this issue in MC-16466, so this ticket is being resolved and linked as a duplicate.
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Thank you for your report!
We're tracking this issue in MC-16466, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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Thank you for your report!
We're tracking this issue in MC-16466, so this ticket is being resolved and linked as a duplicate.
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Thank you for your report!
We're tracking this issue in MC-16466, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
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Same problem as MC-16466 but with IDs instead of UUIDs. Even the "Armor", "Armor Toughness", and "Knockback Resistance" attributes are effected. But if you use armor from the creative menu or craft the armor in survival, the attributes stack.


I'm going to need to see all the attribute modifiers in question. Do they all have the same UUID or different ones? Modifiers with the same UUID will not stack (by design).
Here's a video showing exactly what happens (plus another bug to do with taking the armour off): http://www.youtube.com/watch?v=e7IpyDZHqpg&feature=youtu.be
And here's the NBT data: http://imgur.com/g6LC4zA
I don´t see UUIDLeast and UUIDMost in the screen. Try to add these beside Amount, AttributeName, Name and Operator, and give the different values. Like DB said, attribute modifiers with the same UUID´s will not stack up.
Here is a screenshot http://imgur.com/9iQGEPR
Note: My UUID´s are just 0, so the would not stack up. If you want them to stack up, you have to set the UUID´s to different values.
Oh whoops. The NBT data on the item didn't include UUIDs, but I added them in and it worked fine!
Thanks!
This seems to be a problem in the latest 1.7 snapshots (and possibly earlier releases) but if two items have the same UUIDs but one is armor and the other is an item, if you wear the armor then hold the item and then select a different item in your hotbar both the effects disappear.
These are the commands I used (you will need to put it into a command block):
/give @p 283 1 0 {AttributeModifiers:[
{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:0.4,Operation:1,UUIDMost:67664,UUIDLeast:2745}]}
/give @p 317 1 0 {AttributeModifiers:[
{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:0.4,Operation:1,UUIDMost:67664,UUIDLeast:2745}]}
Put on the boots while you have nothing in your hand then switch to the sword and switch back.
Two same UUIDLeasts and UUIDMosts attributes don't stack. I personally do mine as first item with AttributeModifiers, I will put them UUIDLeast and UUIDMost with 1, and so on.
Tan Chn Cheern 's idea worked for me. Thank you!