Vehicles will wait forever at a rail crossing rather than going around

If a rail crossing is blocked for whatever reason, vehicles will just pile up there forever until it is unblocked without trigger any kind of idle notification or anything. I had a rail crossing too close to station that was acting as a major bottleneck for my entire factory due to this that took me a long time to find the issue. (no vehicles could cross while train was at the station) There are plenty of other pathing option available, but they never re-evaluate until I delete the crossing, which caused them to find another path.