Index: branches/5.1.x/core/admin_templates/categories/ci_blocks.tpl
===================================================================
diff -u -N -r14484 -r14485
--- branches/5.1.x/core/admin_templates/categories/ci_blocks.tpl	(.../ci_blocks.tpl)	(revision 14484)
+++ branches/5.1.x/core/admin_templates/categories/ci_blocks.tpl	(.../ci_blocks.tpl)	(revision 14485)
@@ -66,15 +66,17 @@
 <inp2:m_DefineElement name="structure_reload_element">
 	var $menu_frame = getFrame('menu');
 
-	<inp2:m_if check="m_Recall" var="RefreshStructureTree">
-		<inp2:m_DefineElement name="structure_node">
-			$menu_frame.ReloadFolder('<inp2:m_param name="section_url" js_escape="1"/>', true);
-		</inp2:m_DefineElement>
-		<inp2:adm_PrintSection render_as="structure_node" section_name="in-portal:browse"/>
-		<inp2:m_RemoveVar var="RefreshStructureTree"/>
-	</inp2:m_if>
+	if ( $menu_frame.ajax_requests_count == 0 ) {
+		<inp2:m_if check="m_Recall" var="RefreshStructureTree">
+			<inp2:m_DefineElement name="structure_node">
+				$menu_frame.ReloadFolder('<inp2:m_param name="section_url" js_escape="1"/>', true);
+			</inp2:m_DefineElement>
+			<inp2:adm_PrintSection render_as="structure_node" section_name="in-portal:browse"/>
+			<inp2:m_RemoveVar var="RefreshStructureTree"/>
+		</inp2:m_if>
 
-	$menu_frame.SyncActive('<inp2:m_t pass="m" m_opener="r"/>');
+		$menu_frame.SyncActive('<inp2:m_t pass="m" m_opener="r"/>');
+	}
 </inp2:m_DefineElement>
 
 <inp2:m_DefineElement name="reflect_catalog_buttons">