diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index e1260c7d59..df1432dcb0 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -4895,6 +4895,9 @@ a.list-group-item.active > .badge,
      -moz-transition: width 0.6s ease;
        -o-transition: width 0.6s ease;
           transition: width 0.6s ease;
+  -webkit-backface-visibility: hidden;
+     -moz-backface-visibility: hidden;
+          backface-visibility: hidden;
 }
 
 .progress-striped .progress-bar {
diff --git a/less/progress-bars.less b/less/progress-bars.less
index 9df0251e37..e5e6b65a53 100644
--- a/less/progress-bars.less
+++ b/less/progress-bars.less
@@ -63,6 +63,7 @@
   background-color: @progress-bar-bg;
   .box-shadow(inset 0 -1px 0 rgba(0,0,0,.15));
   .transition(width .6s ease);
+  .backface-visibility(hidden);
 }
 
 // Striped bars