Particle system splitting in half the noob I am recently tried to make a tree, and to make the branches, I decided to make a particle system with my leaves on my branch mesh. But I noticed that some of the leaves were floating out of the mesh. After playing around with the particle settings (enabling rotation, setting inittial rotation to global z and phase to -0.480) I realised that the disposition of the floating leaves was absolutely not random, but in fact a duplicate of the shape of my branch :

But I don't know what I'm supposed to do to correct that.
Any help would be very appreciated :)

Here is my blender file
Change your leaves origin to last of petiole, and set inittial rotation to Velocity/Hair. It might help