Posted by Drake_IronHeart 7 days ago
If you have tomes inside a chest and have some in your back pack and shift to stack them, you get message , ITEM IS NOT TRADABLE, same thing happens if you try to put any tomes manually into the personal chest.
Only chest they go into is the Caerleon bank.
Posted by Thorn-Delwyn 7 days ago (Source)
This is a bug and will be fixed asap.