>>welcome message, but can’t save anyway. just welcome you login . :) >>I can select them, but not move or delete ??? It is a junction, You can't remove a junction when there are should have. 1) T junction 2) more than two PINs connect together. Drag your resistor, check if there are two wires.

Junction: Just in the middle of a wire, how could I have done it? Not a T connection. I can’t reproduce it at the moment, but it showed up after saving, log out and log in again.. The “can select, but not move / delete” is strange, why would the dot stick to the wire? It should disappear if not needed?