Unwanted APP Inventor screen Rotation

[ShanmugaNathan2023]

you can also try this

[F/OS] Screen Orientation Fix

There is a bug in the App Inventor framework that causes a screen orientation flip issue. The “orientation” option for screen orientation does not behave as expected, resulting in unintended behavior. This extension solves the problem by using reflection to access the ScreenOrientation.class, which is part of the App Inventor framework. It modifies its internal state to replace the “unspecified” screen orientation value with “User” for all screens, thus correcting the issue. This extension is s…