My mistake, my version actually is 0.15.12. I've tried all the autosaves of this game to see if it was a recent thing. It had been a few hours since I had placed any rails though, so I can't really narrow down what might be causing it. If others can load and play, that points to it being unique to m...

Steps to reproduce : Load attached save From the toolbar, select the stack of rails Attempt to place a rail that extends from any existing track It does not appear to matter which set of track you attempt to extend, as soon as the mouse-over ghost sprite comes in contact with the placed rail sprite,...