I think there might a couple of different small things that contribute to the issue, not some design behind that.
As far as I can tell there is vertical spacing difference between nodes with and without titles, with and without accompanied text, with or without checkbox for boolean and etc. For example, there is same macro with titled, connected and unconnected nodes. Look at different spacing and alignment for each of them. Also pay attention how different left and right sets of nodes and that whole node size is based on max size of elements. I believe it’s better to tone down or turn off entirely OCD for blueprints because there is soooo much crazy small issues which are not crucial and won’t be fixed anytime soon
