Lagrangian case injector bug

I am performing a lagrangian simulation with sprayFoam solver on OpenFOAM-v1612+. I am writting you down to report a bug that I have noticed when initializing a buzzard with coneNozzleInjection option. If the injection method is a disc and particles size is constant, particles injection is no longer done on a surface but a line from the innerDiameter to the outerDiameter. I have work around with it and the bug only appears when running the simulation in parallel with metis decomposition. I tried a simple and hierarchical decomposition but the case can't run with such methods. A simple solution to avoid the problem is to use a normal distribution with a small variance.