So, switching tabs while you have a battle going seems to freeze the battle, meaning that you cannot initiate another battle even if the battle is "won". I have to refresh when I do this, and remember not to switch tabs while battling. (Switching tabs again before refreshing seems to completely crash the game.)
Otherwise, looks like an awesome game so far.
After having played the first two games, I have to say the user interface is much improved in this one. However, this game goes far too fast, and most of that speed is in the resting. Not being able to control the battle system at all makes this feel more like a "come back and hit a couple buttons every so often" kinda game, and it sucks I can't choose to flee, or when to use potions. On top of that, the stress system causes the player to waste at least half their time of the game resting, which gains no money or treasure and the stat gains just aren't worth it. I like having to be able to have enough bravery to enter a dungeon, but starting the second dungeon you'd enter at 150 kinda hinders some people. By the time you have the money and the bravery to enter, you've wasted a lot of time resting. In my honest opinion, this game is the worst of the three in terms of gameplay, but best in terms of user interface.
Yes, the fighting is a mess of code. I'll try to get it all sorted out quickly. :)