This seems like a minor cosmetic issue to me. Arguably, this is an author error -- I doubt that Youtube intended to have the Search bar show up in print layout at all, or at least not on every page.
Bug 1675490 Comment 4 Edit History
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This seems like a minor cosmetic issue to me. Arguably, this is an author error. I doubt that Youtube intended to have the Search bar show up in print layout at all, or at least not on every page.