diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java
index c9b05695337c5..56b9eabafa6a4 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java
@@ -1143,16 +1143,18 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
      */
     private void updateStackPosition() {
         // Consider interpolating from an mExpansionStartY for use on lockscreen and AOD
-        final float stackY = MathUtils.lerp(0, mTopPadding, mAmbientState.getExpansionFraction());
+        final float fraction = mAmbientState.getExpansionFraction();
+        final float stackY = MathUtils.lerp(0, mTopPadding, fraction);
         mAmbientState.setStackY(stackY);
         if (mOnStackYChanged != null) {
             mOnStackYChanged.run();
         }
 
-        final float shadeBottom = getHeight() - getEmptyBottomMargin();
-        mAmbientState.setStackEndHeight(shadeBottom - mTopPadding);
+        final float stackEndHeight = getHeight() - getEmptyBottomMargin() - mTopPadding;
+        mAmbientState.setStackEndHeight(stackEndHeight);
         mAmbientState.setStackHeight(
-                MathUtils.lerp(0, shadeBottom - mTopPadding, mAmbientState.getExpansionFraction()));
+                MathUtils.lerp(stackEndHeight * StackScrollAlgorithm.START_FRACTION,
+                        stackEndHeight, fraction));
     }
 
     void setOnStackYChanged(Runnable onStackYChanged) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java
index c1a5f148d4cab..413048d6ce54e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java
@@ -42,6 +42,8 @@ import java.util.List;
  */
 public class StackScrollAlgorithm {
 
+    public static final float START_FRACTION = 0.3f;
+
     private static final String LOG_TAG = "StackScrollAlgorithm";
     private final ViewGroup mHostView;
 
@@ -442,7 +444,8 @@ public class StackScrollAlgorithm {
                     maxViewHeight = algorithmState.viewHeightBeforeShelf;
                 }
             }
-            viewState.height = (int) MathUtils.lerp(0, maxViewHeight, expansionFraction);
+            viewState.height = (int) MathUtils.lerp(maxViewHeight * START_FRACTION, maxViewHeight,
+                    expansionFraction);
         }
 
         currentYPosition += viewState.height + expansionFraction * mPaddingBetweenElements;