Try to address issue with customizing grid view in LKS.

src/org/labkey/test/components/CustomizeView.java

@@ -390,11 +390,17 @@ private void addItem(CharSequence fieldKey, ViewItemType type)
 
         // Expand all nodes necessary to reveal the desired node.
         WebElement fieldRow = expandPivots(fieldKey);
-        WebElement checkbox = Locator.css("input[type=button]").findElement(fieldRow);
-        WebElement rowLabel = Locator.byClass("x4-tree-node-text").findElement(fieldRow);
-        rowLabel.click();
+        WebElement checkbox = Locator.css("input[type=button]").refindWhenNeeded(fieldRow);
+
+        // In some situations calling Checkbox(checkbox).check() doesn't always check the checkbox. Verify that it has
+        // been checked, and if not try again.
         ScrollUtils.scrollIntoView(checkbox);
         new Checkbox(checkbox).check();
+        if (!new Checkbox(checkbox).isChecked())
+        {
+            new Checkbox(checkbox).check();
+        }
+
         itemXPath(type, fieldKey).waitForElement(this, 2_000);
     }
 

src/org/labkey/test/components/ui/notifications/ServerNotificationMenu.java

@@ -198,7 +198,7 @@ private WebElement waitForNotificationList()
 
         // Find the container again, don't return listContainer WebElement previously found. If the list was slow to
         // update with the most recent notification the old reference will be stale.
-        return notificationsContainerLocator.waitForElement(elementCache().menuContent, 1_000);
+        return notificationsContainerLocator.refindWhenNeeded((elementCache().menuContent));
     }
 
     /**