Why is the height of the button specified to 25dp in sample project?

[sanjogshrestha]

Tested Device: Pixel XL Android 23 (Emulator)

Issue : Why is the height of the button hardcoded to 25dp?

Expectation:

Reality :

Issue in the popup_window.xml

       <Button
        android:id="@+id/bGotIt"
        android:layout_width="wrap_content"
        android:layout_height="25dp"
        .../>```