Using forge-1.7.10-10.13.0.1191-installer.jar...
In single player, when placing a multiple tracks east to west (or vice-versa) it doesn't re-orient so they're connected (visually at least).
Exiting the world and reentering shows they've connected correctly.
There is no crash log; it doesn't crash.
This worked as expected in 1190.
[Edit] Also no mods installed.