Form Grid Loader doesn't hide after request finished I had today the problem, that the loader doesn't hide after a a ajax response is loaded: My problem is the following error: "TypeError: Cannot read property 'down' of null at Object.
Admin Tab is rendered in left block instead of content I want to add tabs to a custom form in the backend. There are a couple of great tutorials how to add tabs, like from Inchoo or Erfan Imani. But I wanted this: