iOS 15.2 Widget flickering

[FelixLou]

I am building a simple widget following your blog: https://itnext.io/develop-an-ios-14-widget-in-flutter-with-swiftui-e98eaff2c606

I use almost exactly the same code, but after installed, the widget sometimes flickering(Also, caused another widget flickering). I don't see any patterns, but I captured some logs from XCode that might be related.

2022-01-10 19:17:36.728257-0800 Runner[9972:877508] [widget] WidgetCenter connection interrupted.
2022-01-10 19:17:45.321013-0800 Runner[9972:876637] [connection] nw_read_request_report [C10] Receive failed with error "Software caused connection abort"

Could you please advise what to do?