I'm running into an issue where it seems my rail lines are doing strange things. When I open the turn, it looks like my rail lines are repairing but my rail units haven't moved at all (see image - full movement). This is actually the second time in 5 turns this has happened. Any ideas what is going on? The first time I felt maybe I was missing something obvious so I kind of ignored. Now i'm just vexed.

One too many beers perhaps?