I just joined a new server that recently started up and there's a bit of a problem. I can place saplings on naturally generated terrain. If I place a dirt block on to of a naturally generated block, I can place a sapling on that dirt block. If, however, that dirt block is suspended in any way, I can't place a sapling! It automatically despawns like I never placed it. I was hoping you could offer me some insight into why this is happening so I can go back to the admin with something a little more substantial than a complaint. They're both college students and very busy with important things so it would make a big difference if I could help them out somehow.