Bug and idea
The bug here is an example hand being shown with the green dot on the left panel as a straight draw, when the hand (T9 on QJ8) and the matching equity on the graph (both hit) is a straight.
The idea is to be able to click on a percentage-bar of one of the graphs, and see an example hand from that section. So if you click the 60% equity bar of "both players miss" it gives such an example of a hand where you both miss and you have 60% equity (not many hands in this case); the same option would apply for all 9 graphs.
The other upgrade this might require, is that this program store all of its individual results from the thousands of samples already generated, and to draw from that pool every time you request a random hand from that equity mark within a specific graph--rather than running a new sample for the example like it does now.
Maybe it wouldn't though. It could just run a bunch more random hands(like a custom flop) till it finds such a hand; as long as the rest of the data from the general crunching remains intact.