"X% chance for an additional Projectile when Forking"

Invested quite a bit into gems building for an extra 100% chance for an additional projectile when forking. Adding that along with the Split Shot notable and the Forking Projectiles small passive before it, I am at a flat 200%. With that I should be getting 4 projectiles per fork.

Yet I still only get 3 projectiles. There is nothing in the tooltip that states a limit, and the only 2 passives that add to it suggest that if you want more you need to invest in it with the emeralds that allow for extra % chance.

My Deadeye build I am working on is nowhere near as broken as the spark mages, I simply want to basically double my damage with forking and chain from terrain. I don't get how magic users are able to get so much love and synergies, but I am punished for attempting to invest in a fun off-meta build.

The very least GGG could do is add to the tooltip that states a max of 1 extra projectile if you won't allow me to stack more chance past 100%.