I'm using FileDocument (and also tested ReferenceFileDocument) in a SwiftUI app. As usual, saving changes is deferred & handled automatically when you modify the document (or register an undo action for ReferenceFileDocument). I've noticed if you edit the data / document, then quickly exit your app (back to the file selection), then re-open the same file, it provides the old file content (from before the edit was made). If you exit and re-open again (or just wait 10-15 seconds from the original edit), it all works fine and the new changes are present. This occurs on both iOS 14 and iOS 15. Anyone else seen this behavior?