The floor is composed of four IDFloorNoWay01A statics.
I've just loaded a savegame that happens to have the PC pointing at the floor.
When I load this save, the floor static is named "Used for field init" (statics don't have names!!)
If I point to something that has a name, the name changes on the screen, and pointing back to the floor, the "Used for field init" comes back. Any off the four static pieces.
If I point to void or move some distance away, the "Used for field init" vanishes forever.
If, in the loaded save, the PC is pointing somewhere else, this phenomenon does not happen.
I guess it is something the loading software failed to clean up, but I am curious if anybody has any idea of what this is.