Product Version: 1.55.133799 [dev branch]
There are additional faces in the Hotel which are obviously an error: They start at [21995.857, 21019.014, (top floor)] Screenshot and converge at [21985.615,21008.375,1 (ground level/ 2nd floor)] Screenshot. They are visible in multiple corridors example. Here is an overview from the outside with two objects to make it easier to see the location inside the hotel.