The center column of the support tab is back to white

Regression came in here:
ag/1492761

Change-Id: I7ea5015abbe78d06b6df17d3caa3177642539023
Fixes:31958339
Test: Manual
(cherry picked from commit 2d0729045330717fd437e61c8981e94424df8b17)
diff --git a/res/layout/support_fragment.xml b/res/layout/support_fragment.xml
index 913e607..7c79a63 100644
--- a/res/layout/support_fragment.xml
+++ b/res/layout/support_fragment.xml
@@ -15,13 +15,18 @@
      limitations under the License.
 -->
 
-<android.support.v7.widget.RecyclerView
+<FrameLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/support_items"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:clipChildren="false"
     android:clipToPadding="false"
     android:focusable="false"
     android:paddingStart="@dimen/dashboard_padding_start"
-    android:paddingEnd="@dimen/dashboard_padding_end"/>
\ No newline at end of file
+    android:paddingEnd="@dimen/dashboard_padding_end">
+    <android.support.v7.widget.RecyclerView
+        android:id="@+id/support_items"
+        android:layout_height="match_parent"
+        android:layout_width="match_parent"
+        android:background="@color/card_background"/>
+</FrameLayout>