In the iPhone Mirroring environment, when `UIRequiresFullScreen = YES`, how does the system honor the supported orientations?

As demonstrated in the second screenshot, the reported interface orientation is Landscape‑Left, rather than Portrait. Could this be a bug?

Is supporting all interface orientations required on iOS? Is it feasible for an app to support landscape‑only?

In the iPhone Mirroring environment, when `UIRequiresFullScreen = YES`, how does the system honor the supported orientations?
 
 
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