I'm running into this same problem when trying to observe values from the KVO-compliant timeControlStatus property on AVPlayer: init() { self.player = AVPlayer() Task { [weak self] in guard let self else { return } // Observe changes to timeControlStatus using Combine on the AVPlayer for await newValue in player.publisher(for: \.timeControlStatus).values { isPlaying = newValue == .playing // this only gets called for the initial value and never again, the loop does not exit } } }

If you're building with a Workspace, in addition to making sure it's a local dependency in your project, you're also going to want to add it to the workspace file as a group: <?xml version="1.0" encoding="UTF-8"?> <Workspace version = "1.0"> <FileRef location = "group:MISSING_PACKAGE"> </FileRef> ... </Workspace> This is what allowed it to work in my setup on XCode Cloud where it was failing before.