Whoops, looks like items wouldn't be removed from your inventory when used in battle. Just put out a fix for it, thanks for letting me know! (and sorry for ruining your infinite potions)
Hm, that's not good! I've switched to Chrome Version 47.0.2526.35 beta-m (64-bit) and am still able to play. In what way is it not working? What OS are you on?