tree problem

Hi.

    I have a problem with "tree". When "delete" or "insert" actions use in "tree" component, It is wrong! For example:

 

OPS: ops-3.5.0.200702202124  

...

   <xforms:instance id="menu-data">
     <data xmlns="">
       <selected/>
       <items>
           <item name="File"/>
           <item name="Edit"/>

           <item name="View"/>
       </items> 
     </data> 
   </xforms:instance>
...

  <xforms:select appearance="compact" ref="instance('menu-data')/selected">
     <xforms:itemset nodeset="instance('menu-data')/items/item">
         <xforms:label ref="@name"/>
         <xforms:value ref="@name"/>
     </xforms:itemset>
  </xforms:select>

 

  <xforms:select1 appearance="xxforms:tree" incremental="true" ref="instance('menu-data')/selected">
     <xforms:itemset nodeset="instance('menu-data')/items//item">
        <xforms:label ref="@name"/>
        <xforms:value ref="@name"/>
     </xforms:itemset>
  </xforms:select1>

 

  <xforms:trigger>
     <xforms:label>Add</xforms:label>
     <xforms:action ev:event="DOMActivate">
         <xforms:insert nodeset="instance('menu-data')/items/item" at="last()" position="after"/>
     </xforms:action>
  </xforms:trigger>

  

  <xforms:trigger>
     <xforms:label>Delete</xforms:label>
     <xforms:action ev:event="DOMActivate">
        <xforms:delete nodeset="instance('menu-data')/items/item" at="last()"/>
     </xforms:action>
  </xforms:trigger>

...

 

   Is it a bug?