Bug/Issue Bug with door

In game, I was building a house with a friend, and after placing the doors, we realized we couldn't open them. We made sure to not have any wires connected, but it didn't work, until we went to the other side. That side worked perfect, but on the other we couldn't interact with the door. Making tests I figured it was exactly that vertical line of blocks where it didn't work. It wasn't the kind of door either.

This was on windows 7 (my friend's OS, mine is windows 10). If I'm missing information please answer here.