If you click on another player while an animation for an attack is going on, the attacker can go again! I used this to get past a lot of battles. This may only happen when you kill an enemy. After you finish the other player's turn, the first attacker will go again, despite having already killed an enemy. I've only witnessed it working for Duvalier, when he killed an enemy.
Edit: I have now witnessed it with all characters, even when not killing an enemy. With it (and RollingInIt) I can even complete battles on brutal in one turn. The another player mentioned can have already gone, giving both that another player and the attacker an extra turn. Pretty major bug. Also, I have been using RollingInIt. Maybe that's part of the bug. Either way, it makes the game quite a bit easier than it was before.
The archers that reinforce every couple of turns or so in the second bandit mission (In Marid) reappear on top of rocks, both at the beginning of the battle, and when they reinforce. Not sure if that was intentional, but they seem to be able to walk off it, like when Luca uses juxtapose and you appear over a spot that only flying units can fly over. I'm not sure this is a bug.
Edit: No shadows appear in battle, so it looks like broad daylight even when you are in a cave (bandit cave) or crypt (crypt 1). Didn't check any other dark places yet.
Happened first time I played, didn't try to play again, was too busy trying to find ways to get rid of it rather than duplicate it... :(
Edit: They disappear after I closed and then re-opened the game. Ali the Incorrigible's name is also cut off. The card floating re-appeared, this time with all my cards, (1) floating by the side.
Another bug, the first battle when you get Rahel (in the intro), if you die and load auto-save, it shows the battle scene as it was when you died, with you not on the map, and only your remaining allies and enemies, in the same position on the same background. The control interface in the corner is gone, and you can hear a walking noise when you use your arrow keys, but nothing happens, as your character isn't on the screen.
A lot of text in the new version seems to have been pushed out. The new move text at the trainer is pushed out of the frame. It only says half of the words that it used too. So I see, "The only downside to this" and then nothing. When you learn leap for Arman, the whole smaller text is shown, but not the big text at the top. When you press show skill, it only works once. Then, it alternates between Arman appearing at the bottom of the screen and at the bottom, no animations. When Duvalier upgrades, the text that says, "Personality will be upgraded" shows only that, and not the actual number of point it will be upgraded. Also, when playing Psy Duel, if you win, when you exit, a few cards (only 2 in my case - I had more in my hand when I won) just floated by the side, at the same place they were when you played. They are clickable, although nothing happens. They don't seem to disappear if you leave West Ravinale. They don't disappear when I use the auto-save load either. They just stay there, obstructing my view. They are even on the map... They disappear during battle though. They reappear when you leave the battle, though. It's there even when I load another save!
Uh... does this require doing the slaver's bidding? And did you update it as you said you would soon in http://sinisterdesign.net/?p=961? I'm not really sure if there is a new version, or it's just hidden in the old version.