diff --git a/reference/code-museum/src/com/google/gwt/museum/client/defaultmuseum/VisualsForTree.java b/reference/code-museum/src/com/google/gwt/museum/client/defaultmuseum/VisualsForTree.java
index aadc408..ca8e319 100644
--- a/reference/code-museum/src/com/google/gwt/museum/client/defaultmuseum/VisualsForTree.java
+++ b/reference/code-museum/src/com/google/gwt/museum/client/defaultmuseum/VisualsForTree.java
@@ -18,7 +18,9 @@
 
 import com.google.gwt.museum.client.common.AbstractIssue;
 import com.google.gwt.user.client.ui.CheckBox;
+import com.google.gwt.user.client.ui.Label;
 import com.google.gwt.user.client.ui.RadioButton;
+import com.google.gwt.user.client.ui.SimplePanel;
 import com.google.gwt.user.client.ui.Tree;
 import com.google.gwt.user.client.ui.TreeItem;
 import com.google.gwt.user.client.ui.VerticalPanel;
@@ -41,6 +43,9 @@
     TreeItem d = new TreeItem(new RadioButton("myradio",
         "I should line up nicely"));
     TreeItem e = new TreeItem(new CheckBox("I should line up nicely"));
+    SimplePanel panel = new SimplePanel();
+    panel.setWidget(new Label("There should not be any space above me"));
+    TreeItem f = new TreeItem(panel);
 
     t.setSelectedItem(b);
     t.addItem(a);
@@ -48,6 +53,7 @@
     t.addItem(c);
     t.addItem(d);
     t.addItem(e);
+    t.addItem(f);
     b.addItem(ba);
     b.addItem(bb);
     bb.addItem(bba);
diff --git a/user/src/com/google/gwt/user/theme/chrome/public/gwt/chrome/chrome.css b/user/src/com/google/gwt/user/theme/chrome/public/gwt/chrome/chrome.css
index f9ed0a6..f71a4a9 100644
--- a/user/src/com/google/gwt/user/theme/chrome/public/gwt/chrome/chrome.css
+++ b/user/src/com/google/gwt/user/theme/chrome/public/gwt/chrome/chrome.css
@@ -1073,7 +1073,7 @@
 }
 
 .gwt-Tree .gwt-TreeItem {
-  padding: 1px;
+  padding: 1px 0px;
   margin: 0px;
   white-space: nowrap;
   cursor: hand;
diff --git a/user/src/com/google/gwt/user/theme/chrome/public/gwt/chrome/chrome_rtl.css b/user/src/com/google/gwt/user/theme/chrome/public/gwt/chrome/chrome_rtl.css
index 693c41f..6d8a276 100644
--- a/user/src/com/google/gwt/user/theme/chrome/public/gwt/chrome/chrome_rtl.css
+++ b/user/src/com/google/gwt/user/theme/chrome/public/gwt/chrome/chrome_rtl.css
@@ -1073,7 +1073,7 @@
 }
 
 .gwt-Tree .gwt-TreeItem {
-  padding: 1px;
+  padding: 1px 0px;
   margin: 0px;
   white-space: nowrap;
   cursor: hand;
diff --git a/user/src/com/google/gwt/user/theme/dark/public/gwt/dark/dark.css b/user/src/com/google/gwt/user/theme/dark/public/gwt/dark/dark.css
index 1e341c2..6b274f3 100644
--- a/user/src/com/google/gwt/user/theme/dark/public/gwt/dark/dark.css
+++ b/user/src/com/google/gwt/user/theme/dark/public/gwt/dark/dark.css
@@ -977,7 +977,7 @@
 }
 
 .gwt-Tree .gwt-TreeItem {
-  padding: 1px;
+  padding: 1px 0px;
   margin: 0px;
   white-space: nowrap;
   cursor: hand;
diff --git a/user/src/com/google/gwt/user/theme/dark/public/gwt/dark/dark_rtl.css b/user/src/com/google/gwt/user/theme/dark/public/gwt/dark/dark_rtl.css
index f73cbff..4c7e922 100644
--- a/user/src/com/google/gwt/user/theme/dark/public/gwt/dark/dark_rtl.css
+++ b/user/src/com/google/gwt/user/theme/dark/public/gwt/dark/dark_rtl.css
@@ -977,7 +977,7 @@
 }
 
 .gwt-Tree .gwt-TreeItem {
-  padding: 1px;
+  padding: 1px 0px;
   margin: 0px;
   white-space: nowrap;
   cursor: hand;
diff --git a/user/src/com/google/gwt/user/theme/standard/public/gwt/standard/standard.css b/user/src/com/google/gwt/user/theme/standard/public/gwt/standard/standard.css
index 7b4b8ae..2b0341d 100644
--- a/user/src/com/google/gwt/user/theme/standard/public/gwt/standard/standard.css
+++ b/user/src/com/google/gwt/user/theme/standard/public/gwt/standard/standard.css
@@ -1072,7 +1072,7 @@
 }
 
 .gwt-Tree .gwt-TreeItem {
-  padding: 1px;
+  padding: 1px 0px;
   margin: 0px;
   white-space: nowrap;
   cursor: hand;
diff --git a/user/src/com/google/gwt/user/theme/standard/public/gwt/standard/standard_rtl.css b/user/src/com/google/gwt/user/theme/standard/public/gwt/standard/standard_rtl.css
index e3e65af..22db0da 100644
--- a/user/src/com/google/gwt/user/theme/standard/public/gwt/standard/standard_rtl.css
+++ b/user/src/com/google/gwt/user/theme/standard/public/gwt/standard/standard_rtl.css
@@ -1072,7 +1072,7 @@
 }
 
 .gwt-Tree .gwt-TreeItem {
-  padding: 1px;
+  padding: 1px 0px;
   margin: 0px;
   white-space: nowrap;
   cursor: hand;