When I give an item an attribute it removes the attackSpeed. The attackDamage attribute does work as far as I tested. Adding an attackSpeed doesn't fix the issue. Thank you.

Command in question;

/give @a minecraft:iron_axe 1 0 {AttributeModifiers:[

{AttributeName:"generic.attackDamage",Name:"generic.attackDamage",Amount:10.0,Operation:0,UUIDLeast:671851,UUIDMost:718339,Slot:"mainhand"}

,

{AttributeName:"generic.attackSpeed",Name:"generic.attackSpeed",Amount:0.9,Operation:0,UUIDLeast:601253,UUIDMost:804553,Slot:"mainhand"}

],display:

{Name:"DRAKONIAN AXE",Lore:["To greet those you love and murder those you hate!" ]}

,ench:[

{id:34,lvl:10}

]}

Test Command;

/give @a minecraft:diamond_sword 1 0 {AttributeModifiers:[

{AttributeName:"generic.attackDamage",Name:"generic.attackDamage",Amount:1,Operation:0,UUIDLeast:953053,UUIDMost:575935,Slot:"mainhand"}

,

{AttributeName:"generic.attackSpeed",Name:"generic.attackSpeed",Amount:0.9,Operation:0,UUIDLeast:890391,UUIDMost:507755,Slot:"mainhand"}

],display:{Name:"TEST"}}