diff --git a/bi/widget.js b/bi/widget.js
index e8c2ae9ac..a3e3971cd 100644
--- a/bi/widget.js
+++ b/bi/widget.js
@@ -11744,6 +11744,9 @@ BI.MultiTreeCombo = BI.inherit(BI.Single, {
                         self.trigger.getSearcher().adjustView();
                     });
                 }
+            },
+            hideChecker: function (e) {
+                return triggerBtn.element.find(e.target).length === 0;
             }
         });
 
diff --git a/docs/widget.js b/docs/widget.js
index e8c2ae9ac..a3e3971cd 100644
--- a/docs/widget.js
+++ b/docs/widget.js
@@ -11744,6 +11744,9 @@ BI.MultiTreeCombo = BI.inherit(BI.Single, {
                         self.trigger.getSearcher().adjustView();
                     });
                 }
+            },
+            hideChecker: function (e) {
+                return triggerBtn.element.find(e.target).length === 0;
             }
         });
 
diff --git a/src/widget/multitree/multi.tree.combo.js b/src/widget/multitree/multi.tree.combo.js
index 3c98f2c52..fb5234f4c 100644
--- a/src/widget/multitree/multi.tree.combo.js
+++ b/src/widget/multitree/multi.tree.combo.js
@@ -105,6 +105,9 @@ BI.MultiTreeCombo = BI.inherit(BI.Single, {
                         self.trigger.getSearcher().adjustView();
                     });
                 }
+            },
+            hideChecker: function (e) {
+                return triggerBtn.element.find(e.target).length === 0;
             }
         });