Thank you for your post, which is indeed quite interesting.
It appears that the update to macOS Tahoe 26.2 and Xcode 26.2 may have reset some of your configurations or introduced a bug affecting the saving of Model Providers. Have you installed Xcode 26.2 from the App Store or have you downloaded it from the developer’s website? What’s the build number?
This issue has only occurred once after installation, and since then, it has been functioning correctly. However, it is important to determine whether this is a recurrence issue or if it has resolved itself after selecting the model.
Ensure that your project settings are correctly pointing to your Model Provider. Sometimes updates can revert or misplace these configurations. Double-check that there is no additional update for Xcode 26.2.1 or later that might address this specific issue.
Has anyone else experienced this issue?
Albert Pascual
Worldwide Developer Relations.