Bug or Feature
see image
(http://simutrans-germany.com/wiki/wiki/tiki-download_item_attachment.php?attId=2)
This also occurs by building a depot next to the station.
This is the intended behaviour. It will also happen if you built a hall or so at the end.
It's a nice (and ooold) feature. No need to modify in my eyes. It's nice for using with head stations.
thank you, for your answer