On Xcode 16, and running into the same issue. All the properties in my model are codable. Only saw this warning after I turned on CloudKit. Would love an update on this.

This happened to me. I had to go into Settings > Developer Mode > Clear Trusted Computers. Doing so brought up a dialog to trust the computer I was connected to. After selecting "Trust" I was able to build and run normally from Xcode. It might help to disable wifi and use a wired connection.

Also getting the same logs in Xcode: error: the replacement path doesn't exist: I'm not sure if this is debug log noise or something that needs to be fixed.

Same here! Getting the same warnings, and the laggy input when run from Xcode.

Experiencing the same issue in my app after upgrading to Xcode 16. When running the app from Xcode the data does not persist. Launching the app from the device everything seems to work fine, data changes are persisted across launches. The only log I see when running from Xcode is "CoreSVG has logged an error. Set environment variabe "CORESVG_VERBOSE" to learn more.". Everything was working fine in Xcode 15.