Chap 1, still main thread publishing errors

📚 Official Books Modern Concurrency in Swift
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even in the final code, especially rocking back and forth between list and ticker views.

Screen Shot 2022-10-21 at 2.51.27 PM

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Welcome back to Forums, @prenez01 ! Could you provide more details on your Xcode and Swift versions?

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I think he’s saying going back and forth between the app screens would sometimes update the UI from a background thread. This is due to changes in how threads are managed in iOS16/macOS13. We’ll be addressing this in a next edition.

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I added @MainActor to LittleJohnModel class can solve the problem by referencing this thread

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I also have facing the same problem.