Apple solved the issue, thanks.

Same here, an app that has been releasing updates without issues for months. Even 2 days ago, a testflight version successfully uploaded, but today it just failed after simple (non native) changes. TMS-90338: Non-public API usage - The app references non-public selectors in zinspector3: estimatedProgress, initWithFrame:configuration:, isMainFrame, isPassthrough, navigationType, onSuccess:, removeValuesForKeys:completion:, setNavigationDelegate:, setProcessPool:, targetFrame, userContentController, websiteDataStore. Did apple turn on a setting that bans all these out of the blue? Or did someone add a "not" condition in their code and now everything is flagged?

Any updates? 15.2 is near and this is still broken.

Any updates? Canvas in WKWebView are unusable.