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<zk xmlns:h="http://www.w3.org/1999/xhtml">
	<h:h3> [ 1823218 ] Tree with vflex, body grows over boarder.</h:h3>
	<h:pre>
Tree with vflex, body grows over boarder.
Notice: This only happens when there is tree columns
	</h:pre>
	<window border="normal"> 
		<tree id="tree" width="400px" height="30%" vflex="true">
			<treecols id="cols">
				<treecol label="Header"/>
			</treecols>
		</tree>
		<button label="remove header" onClick="cols.setParent(null)" />
		LALLALALALALALAL
	</window> 
</zk>