You guys must have some hardcoded behavior for existing projectiles or something vs custom made ones.

• If I make an entity shoot a minecraft:shulker_bullet projectile, it uses homing correctly
• If I modify minecraft:thrown_trident and add '"homing": true' and make an entity shoot it, it uses homing correctly
• If I new projectile copied exactly from the shulker_bullet entity json and update format_version to 1.10.0 or 1.8.0 etc, and give it my own custom identifier, eg mzo:test_projectile, and make an entity shoot it, it instantly falls to the ground, even if i set gravity to 0 (which is ignored with the other entities anyways)