When looking at a workflow in tree view, the lines sometimes intersect other nodes in a way that may suggest that the data is going through those nodes.
In the example below, at first glance it seems like Add_users and Remove_users are connected (in reality, Add_users is connected to webhookReturn1).
Hi @zimmund! 
Thanks for the feedback - we're always looking for ways to improve the user experience.
The intended pattern is that blocks will always connect at their center point and leave a little bit of a gap between the end of the line and the block itself. That way, it's hopefully clear that the line between Add_users and webhookReturn1, for example, is going behind Remove_users.
There is room for improvement, though! I'll talk to our team about ways that maybe we can make this more clear.