When placing wires, if there is something under where you pressed, they will be placed on top of it. But when it's another wire that is under it, and you move the breadboard, the "node" of the wire on top will not move.
Here are some screenshots showing the bug:
Before moving the breadboard. One wire is on the breadboard itself, another one is on top of it (with two "nodes" on each side) and another one is on top of a chip (with one node on it).
After moving the breadboard. The wire that had two nodes on top of the other wire hasn't move.