Nightingale Legacy Portal
I've been working on a tower and I wanted to use the stave pillars due to their pretty design but I found out at the 3rd floor that they cannot be stacked on eachother. I believe this is due to the fact they are double pillars.
Meanwhile I have tested other 1 stage pillars and they do stack.
I have stacked Stave pillars in my base right now, but I built my base prior to 0.2.