After looking at the picture at the lighthouse depot site, I have to agree with you.
http://www.lhdepot.com/orderdetail.cfm?value=42279

It looks like the knob is on the right hand side of the door both when you're entering and leaving the building. Not quite right. If the knobs on your right as you enter, it should be on your left as you leave.

If the actual piece is like this, then I believe this would have to be a mistake. Good eye.