More of the same.

xpfe/global/resources/content/treeBindings.xml

@@ -61,12 +61,21 @@
     </content>
   </binding>
 
-  <binding id="treecell" extends="xul:text">
+  <binding id="treecell-text" extends="xul:text">
     <content crop="right"/>
   </binding>
 
-  <binding id="treecell-align-right" extends="xul:text">
-    <content align="right"/>
+  <binding id="treecell">
+    <content autostretch="never">
+       <xul:text class="tree-cell-text" inherits="crop,value,align" flex="1" crop="right"/>
+    </content>
+  </binding>
+
+  <binding id="treecell-align-right">
+    <content autostretch="never">
+      <xul:spring flex="5"/>
+      <xul:text class="tree-cell-text" inherits="crop,value,align" flex="1" crop="right"/>
+    </content>
   </binding>
 
   <binding id="treecell-iconic">

xpfe/global/resources/content/xul.css

@@ -268,6 +268,10 @@ treecell {
  behavior: url("chrome://global/content/treeBindings.xml#treecell");
 } 
 
+.treecell-text { 
+ behavior: url("chrome://global/content/treeBindings.xml#treecell-text");
+} 
+
 .treecell-indent {
   behavior: url("chrome://global/content/treeBindings.xml#treecell-indented-leaf");
 }