Comment 1 for bug 1578899

This is not a bug in Open Rails. This is an affect of antialiasing and a short-sighted design of the texture.

You can correct this behavior by editing the texture's alpha channel. You can also try to mitigate it by reducing the antialiasing effect imposed on the game by your video drivers.

See also:
http://www.trainsim.com/vbts/showthread.php?280885-Hairy-Trees
http://www.trainsim.com/vbts/showthread.php?274645