Drupal (all versions): Request Access to View Unpublished Nodes
This article describes a known issue in Drupal Enterprise 7, Drupal Lite 7, Drupal Enterprise 8, and Drupal Lite 8.
Issue: I am collaborating with someone on a Drupal 8 site, but I cannot see their draft pages.
Explanation: This is a function of Drupal 8 as a whole. It is not related to a UMN-specific configuration. The only way to be able to see other authors' pages or nodes is to have full administrative access to the site.
Solution: Contact 1-HELP and request full administrative access to the site.
For more information, consult Drupal's support discussion.