The pedestal only takes 1000g of an object, which is such a small amount that you can't actually see the full texture of debris objects on it. Look at the slime-based bedroom in Capture.PNG. You can't even see the slime spots! Larger debris objects have more complex textures; it would be much better with a larger amount of slime. Compare to the aesthetically far superior Capture2.PNG, where we can see that non-debris objects look great.
(Seriously, I love the new decor objects to death, and I'm unironically proud of this bedroom. You guys are awesome and this game is amazing.)
Steps to Reproduce
Put slime on pedestal. Be disappointed that there isn't enough slime.
This issue has not been confirmed by a developer yet.