I am currently using this version of the material library
com.google.android.material:material:1.7.0-alpha02
However, when I show a date range picker using the martial date picker, the picker overlaps the navigation buttons on my phone see image below:

The reason that it's overlapping with the navigation bar that the
MaterialDatePickerdefaults to a full-screen unless there is a customized style, like in this answer. But that is not what you want either as it will be like a floating dialog.To fix this, you'd change the picker window to not fit its content view to the window insets by passing true to
WindowCompat.setDecorFitsSystemWindows. Please check documentation for more clarification.But, this also affects the top inset of the status bar, so now it will look like transparent; so you have to change its color to match with that of the picker head background.
Here is a demo: