Update colors.xml

app/src/main/res/layout-w720dp/activity_main.xml

@@ -28,7 +28,7 @@
                 android:id="@+id/activity_main_container"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
-                android:background="@color/white"
+                android:background="@android:color/white"
                 app:layout_behavior="@string/appbar_scrolling_view_behavior" />
 
     </android.support.design.widget.CoordinatorLayout>

app/src/main/res/layout/fragment_retry_login.xml

@@ -9,7 +9,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center"
-            android:background="@color/white"
+            android:background="@android:color/white"
             android:minWidth="288dp"
             android:orientation="vertical"
             android:padding="@dimen/margin_24">

app/src/main/res/layout/fragment_room_main.xml

@@ -8,6 +8,7 @@
       android:id="@+id/messageRecyclerView"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
+      android:scrollbars="vertical"
       android:layout_above="@+id/messageComposer" />
 
     <chat.rocket.android.widget.message.MessageFormLayout

app/src/main/res/layout/fragment_two_step_auth.xml

@@ -9,7 +9,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center"
-            android:background="@color/white"
+            android:background="@android:color/white"
             android:minWidth="288dp"
             android:orientation="vertical"
             android:padding="@dimen/margin_24">

app/src/main/res/values/colors.xml

@@ -7,5 +7,5 @@
   <color name="colorAccentDark">#FF287DD7</color>
   <color name="colorAccent_a40">#662D91FA</color>
   <color name="textColorLink">#008ce3</color>
-    <color name="white">#FFFEFEFF</color>
+  <color name="colorRed400">#FFEF5350</color>
 </resources>
\ No newline at end of file

app/src/main/res/values/room_styles.xml

@@ -2,7 +2,7 @@
 <resources>
     <style name="Widget.RocketChat.RoomToolbar" parent="Widget.AppCompat.Toolbar">
         <item name="titleTextAppearance">@style/TextAppearance.Widget.RocketChat.RoomToolbar.Title</item>
-        <item name="android:background">@color/white</item>
+        <item name="android:background">@android:color/white</item>
     </style>
 
     <style name="TextAppearance.Widget.RocketChat.RoomToolbar.Title"