Creating some new node from the quick menu place it way down on the diagram, while there seems to be enough space to the right still.

It seems to be related to the fact that there already is a node connected to the gateway (one below), and when trying to add another one it is always trying to add it under the last one (so in this case the right bottom corner somewhere) even if there is enough room to the right. So I guess that is debatable, wondering if we might want to give priority to the "default" position first if that is available?