Window bottom border not properly aligned

	private Mailformular createMailformular(Component parent) {
		Mailformular mailformular = new Mailformular();
		mailformular.setMacroURI("/WEB-INF/macros/client/mailformular/mailformular.zul"); //$NON-NLS-1$
		mailformular.afterCompose();
		if (parent != null) {
			mailformular.setParent(parent);
		} else {
			mailformular.setParent(div_root);
		}

		return mailformular;
	}

<?component name="attachmentlistbox" macroURI="../attachmentlistbox/attachmentlistbox.zul" class="com.smampi.web.view.client.previewpanel.previewbox.attachmentlistbox.Attachmentlistbox"?>

<window id="wdw_mailformular" sclass="wdw_mailformular" width="40%" height="65%" maximizable="true"
		closable="true" border="normal" sizable="true" mode="overlapped" position="center">

	<!-- Styles -->
	<style src="/css/mailformular.css"/>

	<toolbar height="52px">
		<toolbarbutton id="tbtn_mailformular_send" image="/gfx/32x32/mail_send.gif" orient="vertical"  />
	</toolbar>

	<div id="scroll_parent" width="100%" vflex="1" style="overflow: auto;">

		<grid width="100%" vflex="min" sclass="grid_mailformular">
			<columns width="100%">
				<column width="90px" sclass="noborder" align="right" />
				<column width="100%" align="left" />
			</columns>
			<rows>
				<!-- To -->
				<row sclass="noborder">
					<label id="lbl_mailformular_to" />
					<textbox id="tb_mailformular_to" hflex="1" focus="true" />
				</row>
				
				<!-- CC -->
				<row sclass="noborder">
					<label id="lbl_mailformular_cc" />
					<textbox id="tb_mailformular_cc" hflex="1" />
				</row>
				
				<!-- BCC -->
				<row sclass="noborder">
					<label id="lbl_mailformular_bcc" />
					<textbox id="tb_mailformular_bcc" hflex="1" />
				</row>
				
				<!-- Subject -->
				<row sclass="noborder">
					<label id="lbl_mailformular_subject" />
					<textbox id="tb_mailformular_subject" hflex="1" />
				</row>
				
				<!-- From -->
				<row sclass="noborder" align="left">
					<label id="lbl_mailformular_from" />
					<combobox id="cbobox_mailformular_outgoingservers" width="200px" autodrop="true" readonly="true" />
				</row>
			</rows>
		</grid>
		
		<borderlayout hflex="true" vflex="true">
			<center>
				<div hflex="true" vflex="true">
					<textbox id="tb_mailformular_body" hflex="true" vflex="true" multiline="true" />
				</div>
			</center>
			<east id="bl_east_mailformular_upload" width="25%" collapsible="true" open="true" visible="true" splittable="true">
				<attachmentlistbox id="attachmentlistbox" style="display: block;" height="100%" vflex="true" downloadable="true" cutable="true" copyable="true" deleteable="true" renameable="true" uploadable="true" pasteable="true" dropable="true" />
			</east>
		</borderlayout>
	
	</div>
	
</window>

createMailformular(this);

window.doOverlapped()

Component parent = aLabelInTheWindow;
while(parent != null){
 parent.invalidate();
 parent = parent.getParent();
}