Yes the one on the window is exactly same in size as the large one, and it is on top of the wood. Only differnce is that it has a red spot in the middle which the main one does not have.
If this is glass related, I would expect the same artefacts in the photo taken just before it? The big lamps just came with the room, this is not at someone's home.
Particles from the candles on the floor? I asked about it and they were off. Only two in the window were maybe on.
People were said to be dancing. I was not there.