After reinstalling the App，the ControlWidget Gallery doesn't show custom SF Symbols

I'm working on the control widget which should display the SF image on the UI, but I have found that it cannot be displayed stably. I have eight CarCtrlWidgets which is about the type doorLock、chargeCover、frontBox、 locateCarLight、 locateCarHorn、 ventilate、 backBox and airCondition, it should all be showed but sometime they only show the text and placeholder. I'm aware of the images should be custom SF image and I can see them to show perfectly sometimes, but in other time it is just failed. This's really confused me, can anyone help me out? deviceversion 18.5；device model iPhone 16 pro；