different decks share the same slide index

I have a single gatsby site with many different decks. If I have two of them open in different windows/tabs, they end up synchronized together -- if I go to slide 14 in one deck, the other deck navigates there as well.

I would argue this is not desirable. If both tabs/windows are viewing the same deck, then yes, this is a good thing, as it keep the presenter view in sync with the normal view. But otherwise, no.