1) An attempt at utilizing the "go back to previous message" broke the game.
Some time after the supervisor concluded his first exchange of messages, I attempted to "go back" to see previous replies, but none of them came out, so the conversation chain was just unfinished. After some more message exchanges with Vi, another exchange with James was prompted, but that just caused the earlier exchange to finish, and the new one never popped up, thus blocking progress in the game.
2) Maybe exclusive to the web version, I'm not sure, but attempting to close the game freezes the game entirely. If fullscreen, it locks the browser as well due to the tab not allowing you to exit fullscreen to get to other tabs. I lost my tabs (not a big deal, only a few itch ones) :(