Copy-pasting two connected nodes does nod copy the wire unless the wire is selected

Steps to reproduce:

1. Download and import the attached "GTK-DuplicateWithWires.unitypackage"
2. Open "New Graph"
3. Select both nodes without selecting the wires
4. Copy and paste or duplicate them

Actual results: The duplicated nodes are not connected

Expected results: The duplicated nodes are connected

Tested on (OS): MacOS