Iron Hatches looks strangely different from both sides

[Diragor]

I don't know if it's a feature or a bug or mistake but it bothers me a while that the Iron Hatches looks different from the outside than they look from the inner side.

Got some screenshots from it. (Outside is covered 100% while inside you have one edge where you can see through)

The big problem about them is, when you damage them enough, they get completely see through from one side while the other side is still covered in Iron plates.

Got some screenshots from that too (Outside little holes while inside is gone)

Is that wanted so you can see from the inside while the outside can't see you? Like a pvp feature^^