Why there are two layouts generate in android studio 2021 windows?

Issue

Why two layouts generate automatically (the white one and blue one in Android Studio 2021 for Windows

Solution

As CommonsWare pointed out, you have Design + Blueprint enabled, in the image I posted below you can click the button highlighted in red to select a different type of preview, good luck!

[edit] also here is the documentation page for the layout editor :) https://developer.android.com/studio/write/layout-editor

highlighted in red

Answered By - cashews