diff --git a/src/components/base/popper.js b/src/components/base/popper.js
index 2f0d4386..f7dc6b2d 100644
--- a/src/components/base/popper.js
+++ b/src/components/base/popper.js
@@ -34,7 +34,7 @@ export default {
                             gpuAcceleration: false,
                         },
                         preventOverflow :{
-                            boundariesElement: 'viewport'
+                            boundariesElement: 'window'
                         }
                     }
                 };
diff --git a/src/components/select/dropdown.vue b/src/components/select/dropdown.vue
index 9439abb4..50c674df 100644
--- a/src/components/select/dropdown.vue
+++ b/src/components/select/dropdown.vue
@@ -49,7 +49,7 @@
                                     gpuAcceleration: false
                                 },
                                 preventOverflow :{
-                                    boundariesElement: 'viewport'
+                                    boundariesElement: 'window'
                                 }
                             },
                             onCreate:()=>{