diff --git a/css/backoffice/components/_breadcrumbs.scss b/css/backoffice/components/_breadcrumbs.scss
index 23fc16fa7..88893a26d 100644
--- a/css/backoffice/components/_breadcrumbs.scss
+++ b/css/backoffice/components/_breadcrumbs.scss
@@ -4,7 +4,6 @@
  */
 
 $ibo-breadcrumbs--margin-right: 16px !default;
-$ibo-breadcrumbs--padding: 2px !default;
 
 $ibo-breadcrumbs--item--text-color: $ibo-color-grey-800 !default;
 
@@ -32,8 +31,7 @@ $ibo-breadcrumbs--previous-item-label--max-width: 200px !default;
 .ibo-breadcrumbs{
   position: relative;
   margin-right: $ibo-breadcrumbs--margin-right;
-  padding: $ibo-breadcrumbs--padding; /* Important: N°3900 The padding is here to prevent a bug in the JS Observer API when the window is zoomed in/out, in which case all items respond as being hidden even when they are not. */
-	@extend %ibo-full-height-content;
+  @extend %ibo-full-height-content;
 
   &.ibo-is-overflowing {
     justify-content: right;
diff --git a/js/components/breadcrumbs.js b/js/components/breadcrumbs.js
index a463e0bc2..6797d3d83 100644
--- a/js/components/breadcrumbs.js
+++ b/js/components/breadcrumbs.js
@@ -216,7 +216,7 @@ $(function()
 					me._updatePreviousItemsList();
 				}, {
 					root: $(this.js_selectors.breadcrumbs)[0],
-					threshold: [1] // Must be completely visible
+					threshold: [0.9] // N°3900 Should be completely visible, but lowering the threshold prevents a bug in the JS Observer API when the window is zoomed in/out, in which case all items respond as being hidden even when they are not.
 				});
 				this.element.find(this.js_selectors.item).each(function(){
 					me.items_observer.observe(this);