Managed to get one instance of being able to open a chest before the camera/page was centered and ready, resulting in the chest opening and closing before the items dropped. And when the items did drop, it fell on top of the closed chest instead. Clicking open chest again failed. Happened when party leveling animation was in progress with me furiously clicking on the open chest button. Once the anim ended, the chest opened and closed while the camera was being re-centered. I'm guessing a slower system might have allowed a fast user to repeatedly open and close chest while the camera was moving which might explain some of those chest bugs. Hope it helps.
