when removing a rail curve with a rail signal placed on the intersection point, the rail signal will falsely and indefinitely remain red.
There is no different result whether the rail or signal was placed or removed by hand or by bots.
Steps to reproduce:
- Have a straight rail section
- Place a curve intersecting the straight section
- Place a rail signal on the spot where it touches both the curve and straight segment
- Remove curved rail
- Signal remains red