only show focus outline on select-all-action if tabbing is active

src/Umbraco.Web.UI.Client/src/less/components/umb-table.less

@@ -34,8 +34,12 @@
     text-decoration: none;
     padding: 0;
     margin-left: 1px;
+    body:not(.tabbing-active) & {
+        outline: 0;
+    }
 }
 
+
 input.umb-table__input {
     margin: 0 auto;
 }

src/Umbraco.Web.UI.Client/src/views/components/umb-table.html

@@ -2,7 +2,7 @@
     <div class="umb-table" ng-if="vm.items">
         <!-- Listviews head section -->
         <div class="umb-table-head">
-            <div class="umb-table-row umb-outline">
+            <div class="umb-table-row">
                 <div class="umb-table-cell">
 
                     <button type="button" class="umb-table__action" ng-show="vm.allowSelectAll" ng-click="vm.selectAll()">