Custom Trident model ignores "layer0" and "elements" section

What I expected to happen was...
Trident model will change same as before 1.15
What actually happened was...
It ignores "layer0" and "elements" section. It only use "display" section.
Step to reproduce
1.Apply "Trident_Report" Resourcepack.
2.Do

/give @s minecraft:trident{CustomModelData:1}

3.You'll get weird trident instead of a iron sword model Trident.