They all have quirks. If you don't think you have any, you just haven't found them yet!
Over the past while, I've noticed a few such "quirks".
This picture is of my upper cabinets over the couch. The glass in the second door from the right is installed inside out. The sad part is, that door had the hot glue holding the glass come loose and I just finished siliconing it back in place. I let it dry and reinstalled it. I stood back and looked at my handiwork and saw the difference. No....it wasn't me that put the glass back in wrong, I never removed the glass.
This next photo is of the side emergency exit window. Not sure how you put an exit sticker upside down and leave it, unless they think someone is standing on their head when they find out they have to leave in a hurry.