Why can't a new field be displayed in a node for a certain type of Drupal 7 material?

Question

Drupal

Subject question, there is a certain type of material in which I am trying to display the title_2 field, I see the field in the admin panel, fill it in, the values ​​​​are saved, but when I open the output page I do not see it. In other types, for example "Page"
field is displayed. Why this can happen, I double-checked everything, it seems that there is some kind of restriction on the output of fields for this type, but where it is not clear.

Answer 1

For this type, a custom template was set, it was necessary to find it in the site files and render the field programmatically:
<?php print render($content['title_2']); ?>