Nodes that give a chance for extra spell projectiles interacts very bizzarely with Bone Storm

First of all, it appears instead of each node stacking by increasing the chance of 2 additional projectiles, they are all individually giving their percentage chance to add 2 additional projectiles on top of the others, meaning if you have 3 of these nodes, you have small chance to get 6 extra projectiles.

Secondly, instead of rolling for the chance to add the extra projectiles each time you create a projectile with Bone Storm, it rolls for the chance when you start channeling it. So if it decides to give you 6 extra projectiles, those 6 will be added to every single stage of the channeling, basically instantly reaching the cap of 20 projectiles