From a57ac50bdf9deba41327fbedadc17196708c009a Mon Sep 17 00:00:00 2001
From: maksimgm <maksimmamrikov@gmail.com>
Date: Sat, 26 Sep 2020 16:42:45 -0700
Subject: [PATCH] Update boundry element

---
 packages/material-ui/src/Popper/Popper.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/material-ui/src/Popper/Popper.js b/packages/material-ui/src/Popper/Popper.js
index f5e70dce689301..67db3cf4310f79 100644
--- a/packages/material-ui/src/Popper/Popper.js
+++ b/packages/material-ui/src/Popper/Popper.js
@@ -129,7 +129,7 @@ const Popper = React.forwardRef(function Popper(props, ref) {
           : {
               // It's using scrollParent by default, we can use the viewport when using a portal.
               preventOverflow: {
-                boundariesElement: 'window',
+                boundariesElement: 'viewport',
               },
             }),
         ...modifiers,