When shift-clicking things that can go under power lines, e.g. stone or concrete, passing over the electric pole also disconnects its cables.
To recreate:
- Create some electric poles, connected with copper cable.
- Put concrete in hand then shift-click the tile the pole is on to place the concrete.
Actual: Concrete placement is queued but electric pole cables are disconnected.
Workaround: Be careful when queuing concrete around poles, especially when dragging. Consider using blueprinted concrete, or placing by hand. Alternatively, change the "ghost placement" + "remove pole cables" to be different from each other.
I think one way to solve this would be to not take the disconnect action if the player has a placeable terrain item (concrete, stone, etc.) in hand.