yeah,this is caused by this bug : https://bugs.mojang.com/browse/MC-158872
I've fixed it after one hour of fidling and reordering my file, this works :
{
"parent": "item/generated",
"textures": {
"layer0": "item/bow"
},
"display": {
"thirdperson_righthand": {
"rotation": [ -80, 260, -40 ],
"translation": [ -1, -2, 2.5 ],
"scale": [ 0.9, 0.9, 0.9 ]
},
"thirdperson_lefthand": {
"rotation": [ -80, -280, 40 ],
"translation": [ -1, -2, 2.5 ],
"scale": [ 0.9, 0.9, 0.9 ]
},
"firstperson_righthand": {
"rotation": [ 0, -90, 25 ],
"translation": [ 1.13, 3.2, 1.13],
"scale": [ 0.68, 0.68, 0.68 ]
},
"firstperson_lefthand": {
"rotation": [ 0, 90, -25 ],
"translation": [ 1.13, 3.2, 1.13],
"scale": [ 0.68, 0.68, 0.68 ]
}
},
"overrides": [
{
"predicate": {
"pulling": 1
},
"model": "item/bow_pulling_0"
},
{
"predicate": {
"pulling": 1,
"pull": 0.65
},
"model": "item/bow_pulling_1"
},
{
"predicate": {
"pulling": 1,
"pull": 0.9
},
"model": "item/bow_pulling_2"
},
{
"predicate": {
"custom_model_data": 1
},
"model": "item/custom_bow"
},
{
"predicate": {
"custom_model_data": 1,
"pulling": 1
},
"model": "item/custom_bow_pulling_0"
},
{
"predicate": {
"custom_model_data": 1,
"pulling": 1,
"pull": 0.65
},
"model": "item/custom_bow_pulling_1"
},
{
"predicate": {
"custom_model_data": 1,
"pulling": 1,
"pull": 0.9
},
"model": "item/custom_bow_pulling_2"
}
]
}
(the last one matching is taken, so you have to put them in order from the least specific to the most specific)
