A change in iPadOS 27 is disrupting a presentation workflow used to keep private notes and controls on an iPad while showing only teaching material on an external display. Educator Teddy Svoronos documented the behavior on October 19 and advised people who rely on an iPad for live instruction or presentations to delay upgrading while the issue remains unresolved.
In the earlier workflow described by Svoronos, an application in presenter mode could control the external AirPlay display while the iPad operator moved to other windows. That separation allowed an instructor to project a handout or slide deck while privately checking speaking notes, choosing students to call on, viewing poll results or controlling a presentation running on another computer.
Under iPadOS 27, Svoronos reports that tapping a different application while AirPlay is active causes the external display to show the broader iPad interface. That can reveal material intended only for the presenter and distract an audience as windows appear and disappear. The reported outcome then varies by application. Returning to Goodnotes restores its presenter view, while Keynote exits the presentation and PowerPoint can require the presenter to restart the slide show.
The problem is not simply that external-display control has a new interface. Svoronos says the operating system now appears to give the most recently selected application control of the external screen. In his account, that replaces an older, less obvious method in which an operator selected an application from the dock to determine which app used the display. The new behavior makes ordinary multitasking a risk during a live session.
Svoronos proposes that an application actively presenting should retain priority on the external display until the presentation stops, its document closes or the application quits. That would preserve a stable audience view while leaving the tablet available for the presenter's supporting tasks. He filed the issue with Apple under feedback identifier FB23615646 and said the behavior persisted in the latest beta versions he had tested.
The evidence is a detailed user report rather than an Apple technical notice, and the supplied source does not include a company response or a release timetable for a fix. It nevertheless identifies reproducible steps and distinct effects in three presentation applications. People whose events depend on this setup should test their exact combination of iPad, AirPlay receiver and presentation software before upgrading or using it in front of an audience.
For educators in particular, the reported regression has both reliability and privacy consequences. A failed slide show is disruptive; unintentionally projecting private notes, unrevealed poll results or student-related prompts can be more serious. Until the behavior changes, maintaining a tested operating-system version or using a separate presentation device may be the safer operational choice.
