Fix bug: new items were invisible when added in spring-loaded mode

Change-Id: Ic28f8c83de0f7097d642a2f162e0ee2a91649807
diff --git a/src/com/android/launcher2/CellLayout.java b/src/com/android/launcher2/CellLayout.java
index 19e775b..c68dcc5 100644
--- a/src/com/android/launcher2/CellLayout.java
+++ b/src/com/android/launcher2/CellLayout.java
@@ -1390,7 +1390,9 @@
             lp.isDragging = false;
             lp.dropped = true;
             lp.animateDrop = animate;
-            child.setVisibility(View.INVISIBLE);
+            if (animate) {
+                child.setVisibility(View.INVISIBLE);
+            }
             child.requestLayout();
         }
     }