I'm taking the pool span of 2d6 and plugging it into a histogram and getting an output of 100% zero. Is this a bug or am I misunderstanding how some of the nodes work? I would expect a distribution of values between 0 and 5.
OK - I figured out what's going on. There's a bug in the Pool Span node, where it requires 3 or more dice to work instead of two.
I've fixed it, but in the meantime you can just use the SPAN node which takes two numeric inputs. Here are two examples with the fixed POOL SPAN node on top, and the SPAN node on two dice on the bottom. Both histograms are the same.