Build method uses a non-existent view mode "master"

Switching to bug, as this actually causes layout issues if the view mode 'master' does not exist.

Posting a patch.

rakesh.regar → made their first commit to this issue’s fork.

This should not throw any error as Drupal will try to load the display configuration for "master" view mode. and if not found then Drupal will fallback and will load default view mode.
Considering that "master" view mode is neither a default view mode nor comes preconfigured in view modes, it is better to remove it.
After this change the default view mode "full" configuration will be used to render the node.

I was seeing field labels appear in the maintenance mode node page that otherwise would not be there without specifying 'master' view mode - and we do not have any view mode named that, using Site Studio. It just should not be there.