In performing the Arosaline Scenario Unloaded Wagon Wonderland I took longer than expected to stop and reverse at St. Peter Mollinis North to pick up the empty flatbed wagons. In returning before Luen-Castiel light in the tunnel I got an unchanging Red with a train at Luen-Castiel which is blocking my route to my Go Via Location of Untersax Line 2 The expected behavior would be that even if I am late, I should be routed on the left track since the right track is occupied. The left track is the one used if I don't dally. To recreate take about 15 minutes or so at Mollinis before returning down the hill.