MAGETWO-51472: [FT] Form page action block is covering fields on product page

- Categories field is aligned to the center of the browser before it is filled only for created categories not new ones;

Author: adifucan

dev/tests/functional/tests/app/Magento/Catalog/Test/Block/Adminhtml/Product/Edit/Section/ProductDetails/CategoryIds.php

@@ -71,8 +71,10 @@ public function __construct(
      */
     public function setValue($value)
     {
-        $this->browser->find($this->pageFooter)->hover();
-        $this->browser->find($this->advancedInventoryButton)->hover();
+        if ($this->browser->find($this->pageFooter)->isVisible()) {
+            $this->browser->find($this->pageFooter)->hover();
+            $this->browser->find($this->advancedInventoryButton)->hover();
+        }
         parent::setValue($value);
     }
 }