#514: User sees content snapshot on Category Page in Admin Panel - fixed functional tests

Author: Lukasz Borowiec

app/code/Magento/PageBuilder/view/adminhtml/web/css/source/_panel.less

@@ -68,6 +68,7 @@
         display: block;
         opacity: 1;
         visibility: visible;
+        z-index: 1;
 
         &.sticky-top {
             position: fixed;