Cannot enter new cross connector in dojo

[Triple.B]

I made a new cross connector (4-door hallway) in my dojo, and after it finished constructing, I am unable to enter the room at all. Everything went as normal, the construction finished, the room took on the finished appearance (getting rid of the "being constructed" appearance), and the door opens when I approach, but I am unable to cross the threshold. I can't even try demolishing, since I can't enter. The only way I was able to "enter" was entering into the "Decorations" mode, and even then I was mostly blocked. There is a small gap at the bottom that I can slip through, but exiting Decorations mode and attempting to slide or roll through this invisible gap does not work.