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The "Pages not preloaded" page notes that it excludes addresses with query strings just in case they run some action that you might not want to trigger on hover. You can override the default behavior if you know it's not an issue.

I'm reminded of a post from a few years ago where someone's website had a table of items with [delete] links and would take database actions based on GET requests to those URLs. Who cares? It looks the same to a human browsing it.

And then it got crawled by a search engine which followed all the links to see where they went.

But if you're not doing anything unusual like that, I don't see how prefetching HTML would cause any problems.

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