In vertical connection has wagon skin 1 tile offset to the buttom. Horizontal is it fine, in curves you can see how it shift.

The vertical graphics look too short to me. That, plus the fact that the vehicle on a wagon isn't centered in vertical view, makes me really regret that my vehicle train parking station happens to be vertical… Might have to rebuild that section of my map to alleviate the graphical issue.

This is due to the wagon not stretching. This is a pre- version.13 issue, I think.