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Description
When a page is too wide to fit the screen, the horizontal scroll bar is added in a way that it only becomes visible after scrolling all the way down vertically -- that's very surprising and now how websites usually work. I discovered this when trying to navigate https://rust-lang.github.io/const-eval/ (which maybe shouldn't be an mdbook but the issue could arise otherwise, and the skilltree tool currently only supports mdbook output).