diff --git a/bi/core.js b/bi/core.js
index 5d1a908d6b..f187fb80d8 100644
--- a/bi/core.js
+++ b/bi/core.js
@@ -15476,6 +15476,7 @@ BI.FloatBoxController = BI.inherit(BI.Controller, {
         delete this.floatLayer[name];
         delete this.zindexMap[name];
         delete this.floatContainer[name];
+        delete this.floatOpened[name];
         return this;
     }
 });/**
diff --git a/docs/core.js b/docs/core.js
index 424fced73b..77fa17ae0f 100644
--- a/docs/core.js
+++ b/docs/core.js
@@ -21074,6 +21074,7 @@ BI.FloatBoxController = BI.inherit(BI.Controller, {
         delete this.floatLayer[name];
         delete this.zindexMap[name];
         delete this.floatContainer[name];
+        delete this.floatOpened[name];
         return this;
     }
 });/**
diff --git a/src/core/controller/controller.floatbox.js b/src/core/controller/controller.floatbox.js
index e700f34f36..f721a8fac1 100644
--- a/src/core/controller/controller.floatbox.js
+++ b/src/core/controller/controller.floatbox.js
@@ -137,6 +137,7 @@ BI.FloatBoxController = BI.inherit(BI.Controller, {
         delete this.floatLayer[name];
         delete this.zindexMap[name];
         delete this.floatContainer[name];
+        delete this.floatOpened[name];
         return this;
     }
 });
\ No newline at end of file