From 5f00bba6529d53d850a0d24ff0415782c8acebe4 Mon Sep 17 00:00:00 2001
From: Johann-S <johann.servoire@gmail.com>
Date: Wed, 29 Apr 2020 21:28:20 +0200
Subject: [PATCH] Avoid bad scrollbar replacement into width values (#30690)

---
 js/src/modal.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/js/src/modal.js b/js/src/modal.js
index 6b80bb2f0d..8e505eda96 100644
--- a/js/src/modal.js
+++ b/js/src/modal.js
@@ -455,8 +455,11 @@ class Modal {
   }
 
   _checkScrollbar() {
-    const rect = document.body.getBoundingClientRect()
-    this._isBodyOverflowing = rect.left + rect.right < window.innerWidth
+    const {
+      left, right
+    } = document.body.getBoundingClientRect()
+
+    this._isBodyOverflowing = Math.floor(left + right) < window.innerWidth
     this._scrollbarWidth = this._getScrollbarWidth()
   }