that should never happen and would be an issue you should take to the support then. we're talking about the opposite here: the store pages for games you've bought in the bundle don't know you own them and ask you to buy the bundle (and/or individual game) again.
also, just for the record, yes, OneShot is supposed to be in the bundle, and shows up, on my account, and at the time of writing this, on page 21, ymmv.