Fix layout issue

Change-Id: I65d20ec4b3ce9ec129fe80214f1b5d783635a36c
diff --git a/res/layout-sw600dp/title_bar_nav.xml b/res/layout-sw600dp/title_bar_nav.xml
index ccb9188..818707e 100644
--- a/res/layout-sw600dp/title_bar_nav.xml
+++ b/res/layout-sw600dp/title_bar_nav.xml
@@ -21,7 +21,7 @@
     <LinearLayout
         android:id="@+id/navbuttons"
         android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+        android:layout_height="match_parent"
         android:orientation="horizontal">
         <ImageButton
             android:id="@+id/back"