Hi, I created a ticket in the Feedback Assistant for this issue. Here is the number: FB9434758 Hope it will help.

Hi, I run in the same problem. I just updated to macOS Big Sur beta 9 and Xcode 12.2 beta 2 but it is still the same. Running my macOS app from Xcode with a StoreKit Configuration file, I can make purchases in the Xcode environment but the receipt file is never created in the app bundle. My app is normally also validating the receipt at launch, but calling exit(173) when the receipt is missing will ask for App Store credentials in the Sandbox environment, not in the Xcode environment. Is there a way to force a receipt creation/update by Xcode? Should it work without doing anything particular? Thanks.