Projectile not thrown when right-clicking on villager

When I am standing close to a villager while holding a projectile (splash potion, snowball, etc.), whenever I right-click (which would normally throw the projectile) on the villager's hitbox, the projectile isn't thrown and instead the villager's trading interface opens. This can make it difficult to heal villagers quickly with splash potions, as you have to be careful to aim away from their hitboxes before throwing. I really would appreciate it if this were fixed so that the projectile is actually thrown at the villager. This would make it so much easier!