My Flutter app looks and behaves exactly the same on an Android phone, iOS phone, Android simulator and iOS simulator.

However, when the same app is released to App Store and downloaded from there, there is one difference on one screen. A GridView which shows three small colour boxes is blank.

I have tried my best at searching the web for answers but did not find similar concerns about Flutter. This SO question is the closest thing I found but it’s not related to Flutter. I tried what it mentioned but there is only one “Runner” target that I have and no separate target for App Store.

Have you faced the same thing and if so how did you resolve it?