Do you now also have this problem? It seems to be related to some update. I've now made two runs to Arosa and every time I enter the last tunnel just before the finish line, I get a red signal that I can acknowledge and derail! This is very annoying because almost an hour has passed since then. The first time it happened during a scheduled journey, the second time in a scenario. I've never experienced anything like this on the Arosa line and I drive it more often. Can anybody confirm this?