@preconcurrency import AVFoundation import Observation @Observable final class MyClass { } final actor MyActor { nonisolated let session = AVCaptureSession() }@preconcurrency import AVFoundation import Observation @Observable final class MyClass { } final actor MyActor { nonisolated let session = AVCaptureSession() }@Observable があると、@preconcurrency を消せといわれ、消すと付けろと言わる... マクロの何かが preconcurrency をぶっ壊すっぽい。 (edited)