How do you do that without affecting the building that is connected to it. What they could have done is use a smaller window. Width wise! Wanna, bet that someone order the wrong size and they just decided to go with it, since only about three people on WDWmagic were ever going to notice it anyway.
Since that is in DLR and I have no intention of going to DLR, plus, even if I did Club 33 has no impact on me I would just have walked on by. What would I care about the architecture on something I'm never going to go into to begin with?