If you are talking about the first game, there are a couple things you can "get" but not many. The second game has a couple more. I can't say whether it's a bug it not in your case unless you let me know specifically what you were trying to get.
Or, if you are stuck, you can look up a walk through for the original flash game. If you are trying to get something that the walkthrough says you should be able to get in the original but cannot get in my version, then let me know, as that would definitely be a bug!