Break the nodes at top left corner and bottom right corner. Result - 2 paths.
How do you re-connect or weld the verts back together? Close path doesn’t seem to do it. Nor can I find a way to get them to reconnect. I don’t see a weld or join node/vert function.
I just move one wire end over top the other. My eyes require I zoom in for a better view. I find it is a little touchy getting it right, but it works. I suspect the node marker changes color, but I am not sure.
The node should snap closed. You’ll see your cursor change from an X to a + when you are in the right place and it should snap into place.
Also back in 1.0.03 they added a feature where if you hold ALT it increases the snap distance 3x and that seems to work for dragging nodes as well on my quick test.
Note I’m holding ALT here and you can see the cursor change when I get close to the other node.