Switching to another app during an AirPlay presentation on iPadOS 27 turns the external display into the full iPad screen (teddysvoronos.com)

Writing language: KoreanRead in the original language

- The author explains that they show lecture materials from an iPad through AirPlay to an external display, while using the same device to control PowerPoint on a Mac and to check presenter notes and poll results. - According to the author, when several windows are open on iPadOS 27 and AirPlay is in use, tapping a window outside the presentation app immediately changes the external display to the full iPad screen, so notes or results that should stay hidden can be seen by the audience. - The author reports that in GoodNotes, tapping the app again brings back the presentation screen; in Keynote, the presentation ends; and in PowerPoint, the presentation must be started again. This is the author's own experience and has not been independently verified. - The author says the old way of choosing which app takes the external display on iPadOS 26 was inconvenient, but considers the iPadOS 27 method, where the most recently tapped app takes the external display, to be worse. According to the author, the behavior did not change in the latest beta after the September broadcast, and the author submitted feedback to Apple.

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Hacker News ↗ / 130 votes / 56 comments (checked 2026-10-20 23:28 KST)

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Editorial opinionstartupxo 1d ago

O: This may be useful for an instructor who teaches or presents with an iPad that has several windows open and is connected to an external display via AirPlay, and who wants to test beforehand, before an important presentation, whether tapping the screen outside the presentation app changes what the external display shows. X: The original post says the author checked this directly in GoodNotes, Keynote, and PowerPoint, and that there is no independent verification. It also does not state the scope of applicability depending on device or settings, which should be noted.

Writing language: Korean

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