diff --git a/bricks/bricks.js b/bricks/bricks.js
index 5ab7fcd..7d6299e 100644
--- a/bricks/bricks.js
+++ b/bricks/bricks.js
@@ -614,10 +614,14 @@ bricks.getWidgetById = function(idset, from_widget){
 		}
 		var el = fromw.dom_element;
 		var nel;
+		// id 可能是层级路径的末段（DOM id 为完整路径如 app.world_content），
+		// 先精确匹配，再按 ".末段" 后缀兜底；CSS.escape 防点号被当 class 选择器
+		var selExact = '#' + (window.CSS && CSS.escape ? CSS.escape(id) : id);
+		var selSuffix = '[id$=".' + (window.CSS && CSS.escape ? CSS.escape(id) : id) + '"]';
 		if(downward ){
-			nel = el.querySelector('#' + id);
+			nel = el.querySelector(selExact) || el.querySelector(selSuffix);
 		} else {
-			nel = el.closest('#' + id);
+			nel = el.closest(selExact) || el.closest(selSuffix);
 		}
 		if (!nel) {
 			console.log('get_by_id() return null',id, fromw, downward);
diff --git a/bricks/header.tmpl b/bricks/header.tmpl
index f82c990..e4074c1 100644
--- a/bricks/header.tmpl
+++ b/bricks/header.tmpl
@@ -37,7 +37,7 @@
   <script type="module"
     src="{{entire_url('/bricks/3parties/model-viewer.min.js')}}">
   </script>
-  <script src="{{entire_url('/bricks/bricks.js')}}?v={% if assets_ver %}{{assets_ver()}}{% else %}20260829a{% endif %}"></script>
+  <script src="{{entire_url('/bricks/bricks.js')}}?v={% if assets_ver %}{{assets_ver()}}{% else %}20260830a{% endif %}"></script>
 {% for myjs in jsfiles() %}
   <script src="{{entire_url(myjs)}}{% if assets_ver %}?v={{assets_ver()}}{% endif %}"></script>
 {% endfor %}