(small, complicated) Bug 1: Chapter 3 with Galeoth... If you kill the Golems simultanously in the First Omega Orb Puzzle, sometimes the puzzle finish triggers, but no Orb spawns. The second time 2 Orbs spawned, because I finished the puzzle twice... so at the end I had 7 Pieces of Omega Orb -> The result: no Omega Orb for me after the boss xD
(medium) Bug 2: Books aren't in the right order. In Races there's missing the ogres. I think it messes everything up.
(bug?) Bug 3: Restoration Belt is missing? Didn't find any recipe.