macOS Catalina 10.15.7 (19H524) Thanks for clarifying. I tried on Mac mini 2018 with macOS Big Sur 11.1. Quite interesting difference.Not sure any of the settings may be affecting or not.

Is there for playground some memory limits or etc? Not clearly documented, but there might have been. As far as I tried your code on Xcode Playground of 12.4, it showed non nil result. The issue may be fixed in 12.4, or some other things may be affecting.

If your main concern is keeping the old versions, I use git. For making backups just for backups, I use Time Machine.

So, what's your choice? Continue developing with Xcode 10.1? Or migrate your framework to Xcode 12?

I have a binary framework dependency compiled with swift 4.2.1. That means you cannot build a binary for App Store, are you OK with it?

Swift 5 to Swift 4.2. I can't understand what you are trying. What version of Xcode are you using?

what is the issue? Not enough info in your post. How is loadData() implemented? Does it handle multi-threading and/or asynchronous calls properly?

I have tested your project on my iPhone 7 plus (iOS 14.3)/iPhone 12 Max (iOS 14.4), and both work as expected as I wrote in my former post. I needed to change Bundle Identifier and remove Capabilities: iCloud and Push Notification to test the app on my testing account. And I needed to Trust my testing account, each time I deleted the app. Any of such things may be affecting. So, I think your code is well, just your testing environment or something other than code may be affecting. after that, the button stopped working, if you'll believe it.  If that is an observable fact, we should think based on it. But as for now, I have no clue what's causing the issue. I recommend you, again, to create another brand-new project. Move some code from your actual project to it one by one , until you can reproduce the issue. (You may need to modify your project settings and code to make it build and run with the limited resources for each step.) That may reveal what may be affecting.

Can you be more specific? I do not understand what is working and what is not working reading your post? Can you show some code which we can run and examine and explain what is the expected result and clarify the difference from what you actually get?

 Do you know if deleting an app from the device actually resets the app storage properties? AppStorage should be deleted when you delete your App. I will try later using some actual devices.

I tried your project, (You should better create a simplified project and include all the code into your post. Not many readers will go into the links.) Notification alert appears Welcome to Meetings sheet is shown below the alert Whether I choose Allow or Don't Allow Welcome to Meetings sheet gets visible I tap Get started Sheet changes to What's New to Meetings I tap Continue Sheet dismissed, and a view with navigation title My Meetings appears Quite as expected. Is there any condition to reproduce the issue? Any specific iOS versions? Need actual device?

When I press the button in the modal view, it prints 123 but doesn't dismiss the modal. As far as I tried, when I press the button in the modal view, it does print 123 and does dismiss the modal. (Sorry, corrected.) Maybe something hidden in your code is affecting. Better show issue reproducible code.

site didn't allow me to write scheme that's why I write url without scheme.  I see. A really annoying restriction.

Thanks for the explanation and showing the result. Technically, non-ASCII characters like "ö" are not allowed in URLs and needs to be escaped using percent-encoding. (Unfortunately, some browsers do this conversion automatically and hidden from users.) You can try something like this: WebImage(url: URL(string: item.image?.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? "")) Or, it would be better to set already percent-encoded string to the property image.

Can you explain what is WebImage, and show us some examples of the paths containing non-English characters?