Soran, I play on PC and am using that loft glitch right now as I write this message. At least every other week someone starts saying the glitch has been fixed since we found it a year ago, but this hasn't been the case yet.

However, it is very finicky. What particularly is the problem? Is it not moving at all? Is it falling back to the floor?

I agree that we should be able to place things freely along the Z-axis, but unfortunately this is not possible right now. If the glitch is giving you too much trouble to bear, there are still plenty of interesting tabletop items you can use to make a second floor.