Magisk/app/src/main/res/values-v21/styles_md2_impl.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="WidgetFoundation.ProgressBar.Indeterminate" parent="Widget.AppCompat.ProgressBar.Horizontal">
        <item name="android:indeterminate">true</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_width">100dp</item>
        <item name="android:indeterminateTint">?colorPrimary</item>
    </style>

    <style name="WidgetFoundation.ProgressBar.Indeterminate.Circular" parent="Widget.AppCompat.ProgressBar">
        <item name="android:indeterminate">true</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:indeterminateTint">?colorPrimary</item>
    </style>

</resources>