Merge pull request #213292 in DEC/fineui from release/11.0 to bugfix/11.0

* commit '328f5d943453bc879129302fc7115a142c6e9088':
  REPORT-87371 fix: 【BI6.0】【目录管理-管理首页】添加首页时模板类型的下拉框为空

src/base/combination/combo.js

@@ -214,7 +214,15 @@
                     },
                 },
             } : this.combo;
-            var positionRelativeElement = BI.DOM.getPositionRelativeContainingBlock(BI.isNull(o.container) ? this.element[0] : BI.Widget._renderEngine.createElement(BI.isFunction(o.container) ? o.container() : o.container)[0]);
+
+            var positionRelativeElement = BI.DOM.getPositionRelativeContainingBlock(
+                BI.isNull(o.container)
+                    ? this.element[0]
+                    : BI.isWidget(o.container)
+                        ? o.container.element[0]
+                        : BI.Widget._renderEngine.createElement(BI.isFunction(o.container) ? o.container() : o.container)[0]
+            );
+
             switch (o.direction) {
                 case "bottom":
                 case "bottom,right":