I've been playing on the said pack for only a bit of time, on the modpack's official server, but I found that whenever I place a nomad book, it does place the book and the upgrade do work too (mushroom and aquatic membrane) but the book itself doesn't work. I can place blocks inside the specified area, the boundaries do show, but whenever I right click to retrieve the book, it says that there's not enough space and I can't retrieve the book without opening my inventory and picking then placing on another slot in the inv to take it back. The blocks placed and upgrade will disappear visually, but will reappear when right clicked. the mushroom stems will also stay (as a glitched invisible block) and have to be removed manually. The blocks in place can't be passed through as it will "teleport" back every time. This makes the book useless, even though I personally can see the potential of the mod. My book is upgraded to be 20 blocks tall and in a 44 square, with mushroom and aquatic membrane.
Another problem I saw after disconnecting then reconnecting (making every invisible blocks visible again) is that I placed the book on a 1 block tall platform (44*20 space being available and not being air on the ground) and after checking, the platform under the first, 3 blocks away, was linked to the original by a mushroom stem.