I have a Problem, that has been there for several patches so far, with and without mods (Since the "new" rail placement system)
I have only been too lazy to report this since after a few hours i place rail with bots anyways and it doesn't matter
But with higher difficulty i need to place rails by hand for a long time so now here is the description:
When i place a straight rail and try to connect to that rail, i can no longer start placing rails connected to other locations
The game "remembers" where i last placed a rail and will automatically resume rail building there - in the direction of where i am trying to build rail parts.

in this Image I first placed a few rails on the left side
then went to the right side, placed a rail, clicked on the arrow to connect from there
what happens is that the game will place rails from the left side in the direction of the right side (where i clicked on the arrow to start building rails from there).
This is no range limit
I can be on the other side of the map and the rails will still be placed where ever i last placed some Rails.
It can only be stopped, when the rail placing fails - i always carry several big buildings with me, and when i am done placing rails in one direction, i will palce this building where the next rails would have to be placed and then after it failed i can place rails at a new location.
I do not know if i made some settings for this, but i think mainly that it is a bug, because i have no range limit with this.
I had to walk literally for minutes so the location where game placed some rails in order to "break" the rail placement chain with a building.
If anyone has an Idea where is might come from i't be happy to hear!
Best regards
Sluggy