When I use custom deltaTime to call UpdateGraph(deltaTime), the nested graph can’t apply this deltaTime. so I modify source code to fit my requirement just like this:
Passing “this.graph.deltaTime” in subgraph Update call is actually a correct change in case you need to access deltaTime of subgraphs. However, if there is no need to know subgraph deltaTime, then it is not really important since the subgraphs are updated only when their parent graph is updated eitherway. However, your change is more correct and I will also make that change officially.