I observe the same issue. The problem only occurs with the wide angle camera. The systemRecommendedVideoZoomRange is 1-10, but the slider shows 1-5x, despite the displayVideoZoomFactorMultiplier being 1. Great that you could figure out the formula, but I guess this is an issue in iOS that will (hopefully) be fixed soon.

@ekurutepe, thanks for sharing your insights! With your proposed solution, I get the error: Closure containing control flow statement cannot be used with result builder 'WidgetBundleBuilder' How are you able to circumvent this limitation?