I was making a long train line and I wondered why I did not have electricity at the end of the line, and I found this :

The right pole did not connect to the left one and i have no idea why ...
The lines where placed by robots, and the two poles are on the same blueprint (the blueprint is a train segment long)
This line is tens of thousands of units long and this is the only place it happened ...
Are you aware of this happening to anyone else ?