Tablet size not compatible with app inventor display size


I have issue with Galaxy Tab S7 the app inventor display size not compatible with my Tab Size as what it showing in the image below.
Can someone support me on this?

The designer view is only a representation of the display, it will be different on different devices when connected to companion or when compiled.

Set your components to handle different sized screens using automatic or fill parent sizings, and ensure your is set to responsive (not fixed)