Hi,
I have noticed some weird stuff. If you have some switch set for example straight and you come from turn, you will not set the switch to turn by your wheels. This applies opposite too. IRL you will either set the switch, because it is exit switch made for that and you are tram, unless it is special type, which has a spring inside and will return itself into default position, or damage the switch, bacause you are train and the switch is not supposed to allow that.
With this is tied also situation, when you stop with at least one bogie after the switch set for other direction than you came from, and reverse your tram and begin to drive it in opposite direction. It will result in this or similar stuff.
This is a Tatra KT4 train made of 3 vehicles for fictive testing in Kleinfurt 2009 map and last bogie was behind that switch in situation, which was described before picture.
At Berlin celebration multiplayer, when I got there for few minutes, I got with GT6N into similar stuff and managed to have one bogie at turning loop on the right track and other two at left track. I had to restart the game in order to put myself on one track...
I hope I am understandable...