I cannot give a truck orders to go to a truck only station, or a truck and bus combined station. If I add a railway station, I can give orders by clicking on the railway station, not the truck station, and the truck work OK.
Railway orders work OK. Something funny going on here.
This happens with old version savegames and with new games.
Not a real problem for me as I usually only use trains

More info. Bit 3 (Value 8 ) of experimentalfeatures switch turns this problem on.
Regards
Peter