Improved stack scroll range logic and more card background bug

Change-Id: Id3e6dfc4de09c6853ea1973b287880ac5f32b40b
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
index 281bd2d..4bd0e1c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
@@ -112,7 +112,7 @@
      * @return The desired notification height.
      */
     public int getIntrinsicHeight() {
-        return mActualHeight;
+        return getHeight();
     }
 
     /**